Online Gem B2B Marketplace Development

Building a digital diamond trading platform that connects buyers and sellers through a secure, scalable B2B marketplace.

SolGuruz built for a diamond trading company headquartered in Antwerp, Belgium - the global capital of diamond trade. The platform handles end-to-end B2B diamond commerce: inventory management with ERP system synchronisation, multi-tier B2B pricing for verified buyers, diamond categorisation by 4 Cs (Cut, Color, Clarity, Carat), advanced search filters, secure payment processing for high-value transactions, and order tracking, forming a complete diamond trading app ecosystem.

SolGuruz Diamond B2B Diamond Marketplace

Industry

Diamond Trading & Jewelry / B2B Commerce / Gemstone Marketplace

Platforms

Responsive Web Portal + iOS App (Flutter) + Android App (Flutter) + Admin Panel

Timeline

6+ Months

Tech Stack

Flutter + React.js + Next.js + Node.js + Firebase + AWS + OAuth 2.0 + Postman + Swagger + Figma

Project Overview

This case study covers a B2B diamond trading marketplace built for a company in Antwerp, the global hub of diamond trade, led by the Antwerp World Diamond Centre. The platform serves verified traders, jewellery manufacturers, and high-volume buyers with direct access to inventory at multi-tier pricing.

Most platforms like RapNet, IDEX Online, and Polygon are aggregators where suppliers compete on price. This solution takes a different approach. A custom marketplace where the client owns pricing, buyer relationships, and ERP-synced inventory. The trade-off is lower initial scale but complete control over data and experience.

SolGuruz delivered the platform end-to-end: product architecture, UX/UI for buyer and admin flows, a responsive web app (React.js + Next.js), mobile apps (Flutter), a Node.js backend with ERP sync, and AWS-based infrastructure.

What Is a B2B Diamond Marketplace?

A B2B diamond marketplace is a digital platform where verified diamond traders, jewelry manufacturers, and high-volume buyers can search, evaluate, and purchase diamonds directly from suppliers, typically operating on multi-tier pricing, wire transfer, or letter of credit settlement, and ERP-integrated inventory. The category is divided into four primary models:

Industry-wide diamond aggregators

List inventory from thousands of dealers in one searchable database (Rapaport / RapNet, IDEX Online, Polygon, Get Diamonds)

Custom brand-owned B2B marketplaces

A single diamond company's direct-to-buyer platform with their own inventory, pricing, and brand experience (this case study type)

Lab-grown diamond marketplaces

Specialise in laboratory-grown diamond trading, separate from natural diamond commerce due to regulatory disclosure requirements

Diamond exchange platforms

Facilitate peer-to-peer diamond trading between dealers with escrow and authentication services (VDB, Liquid Diamonds)

This case study covers a custom brand-owned B2B marketplace the Antwerp client's direct-to-buyer platform with their own inventory, multi-tier pricing for verified buyers, and ERP-synchronised stock management.

How Does a B2B Diamond Marketplace Work?

A B2B diamond trading marketplace flows from buyer verification to settled transaction across six stages:

Buyer Verification & Account Setup

Diamond commerce is not open commerce, buyers must be verified before accessing pricing or inventory. Verification typically includes business registration check, KYC documentation, AML screening, OFAC sanctions check (especially post-Russia diamond sanctions), and trade reference validation. Once verified, buyers receive tier-specific pricing and credit terms.

Inventory Browse with 4 Cs Filtering

Buyers search the diamond catalog using industry-standard parameters, the 4 Cs (Cut, Color, Clarity, Carat), shape (round, princess, oval, emerald), origin certification, and price range. Each diamond record links to its grading certificate (GIA, IGI, HRD), high-resolution images, and Rapaport price benchmark for comparison.

Diamond Detail & Certification Verification

Diamond detail pages show full grading certificate data, 360-degree imagery or video, fluorescence, polish, symmetry, and fluorescence ratings. Certificate authenticity verifies via direct API integration with grading laboratories. Buyers can request additional photography or third-party verification before committing.

Quote Request & Multi-Tier Pricing

B2B diamond pricing is not list-price commerce verified buyers see tier-specific pricing based on volume history, payment terms, and trade relationship. High-value diamonds typically route through quote-and-negotiation flow rather than instant checkout. The platform tracks quote history, expiry, and negotiation rounds.

Order Placement & Payment Processing

Order placement triggers a multi-step settlement workflow: buyer confirms order, seller acknowledges allocation, payment routes through wire transfer or letter of credit (rarely card payment for high-value diamonds), and Kimberley Process documentation generates for cross-border movement. Multi-currency support handles US Dollar, Euro, and other settlement currencies.

Inventory Sync & Order Fulfillment

Once payment clears, the diamond is allocated to the buyer in the ERP system, removed from public inventory, and shipped with full Kimberley Process and customs documentation. Order tracking covers customs clearance, shipping, and delivery confirmation. Post-sale data flows back to the ERP for financial reconciliation and tax reporting.

Why Did the Antwerp Client Need a Custom B2B Diamond Marketplace?

The client identified four operational gaps that off-the-shelf B2B diamond platforms couldn't solve:

ERP Inventory Synchronisation Without Manual Re-Entry

The client's diamond inventory lives in their ERP system every stone has a unique identifier, certificate number, location, status, and pricing history. Industry aggregators require uploading inventory through CSV imports or manual entry, which creates two sources of truth and data drift. A custom build let the Antwerp client maintain a single source of truth in their ERP and sync to the marketplace automatically, enabling a scalable diamond B2B marketplace architecture.

Brand-Owned Buyer Relationship

Industry aggregators like RapNet and IDEX put their own brand front and center the buyer experience is the platform's, not the supplier's. Brand-owned marketplaces let the Antwerp client surface their own brand on every screen, every quote, every confirmation. For an established Antwerp diamond company building long-term buyer relationships, brand control matters.

Multi-Tier B2B Pricing for Verified Buyers

Industry aggregators show standard list pricing visible to all buyers. B2B diamond commerce works on tier pricing, a long-term high-volume buyer pays differently than a new occasional buyer. Custom platforms support this natively with verified buyer tiers, payment-term-based pricing, and negotiation workflows.

Compliance Workflow Built In

B2B diamond trading requires Kimberley Process Certification Scheme documentation for cross-border movement, OFAC sanctions screening (especially post-Russia diamond sanctions enacted 2024), KYC for high-value buyer verification, and customs paperwork. Off-the-shelf marketplaces handle this generically; a custom build implements the exact compliance workflow the Antwerp client's legal team requires.

What Solutions Did SolGuruz Deliver?

SolGuruz delivered the B2B diamond marketplace as a complete multi-platform engagement covering design, web, mobile, backend, ERP integration, and infrastructure. The solution had five core components:

Web Portal for Verified B2B Buyers

Responsive React.js + Next.js web platform serving as the primary buyer interface. Server-side rendering for SEO performance on diamond detail pages and category landing pages. Component library shared across buyer-facing portal, admin dashboard, and inventory manager interface.

Native Mobile Apps (iOS + Android via Flutter)

Single Flutter codebase delivering native-quality performance on iOS and Android. Buyers access inventory, request quotes, track orders, and receive push notifications for quote updates and order milestones. Biometric login for fast app re-entry. Offline access to quote history and recent orders for when buyers travel internationally.

Backend & ERP Synchronisation Engine

Node.js backend handling user authentication, buyer verification workflow, inventory orchestration, quote management, payment processing, and notification dispatch. Dedicated ERP synchronisation layer pulls real-time inventory updates from the client's ERP system and pushes order events back maintaining a single source of truth for diamond inventory across both systems.

Admin Panel for Inventory & Order Management

Web-based admin dashboard for the client's sales team, inventory managers, and operations admins. Inventory configuration (categorisation, pricing tier rules, certificate management), buyer tier management, quote approval workflow, order tracking, and analytics on buyer behavior and conversion funnel.

AWS Cloud Infrastructure & Multi-Layered Security

AWS-based infrastructure with EC2 for backend services, S3 for diamond imagery and certificate storage, CloudFront for global CDN distribution, RDS for relational inventory and order data, and managed firewalls. Multi-layered security covering encryption (HTTPS with TLS 1.3 in transit, AES-256 at rest), OAuth 2.0 authentication, AWS firewall rules, source code obfuscation, and automated backup. Compliance-ready architecture for Kimberley Process documentation and OFAC sanctions screening.

Planning a Diamond Marketplace? Let's Architect It Right

Skip guesswork. Get a clear breakdown of tech stack, ERP integration approach, feature roadmap, and cost estimate tailored to your business model.

About the Diamond B2B Marketplace Project

About the Project

Our client deals in high-quality diamonds for which they wanted to build a seamless B2B diamond marketplace for selling diamonds to verified traders and manufacturers. We provided an elegant and efficient platform that helps them sell their diamonds faster with a visually appealing effect. We utilized maximum visual and creative ideas to showcase the client's diamond collection with full 4 Cs categorisation, certificate linking, and advanced filtering. We aimed to deliver their end users a secure online purchasing experience using robust backend infrastructure, ERP sync, and compliance-ready architecture.

The Solution of the B2B Diamond Marketplace

The Challenges

Our development team encountered several challenges while building the robust B2B diamond marketplace platform: Complex inventory management - the client dealt with different types, shapes, and certifications of diamonds, requiring sophisticated stock and inventory management with real-time ERP sync. Advanced search and filtering for buyers evaluating high-value purchases with complex criteria (4 Cs parameters, certificates, price ranges, origin). Buyer verification and tier-based pricing logic. Security and authentication for high-value transactions. Compliance with Kimberley Process, OFAC sanctions screening, KYC/AML requirements, and multi-currency payment processing.

The Solution

Our team developed a robust inventory management architecture that allows the client to tag, categorize, and display each diamond separately with detailed specifications (4 Cs, certificate numbers, origin, high-resolution imagery, 360-degree views). Advanced multi-parameter search with saved search functionality and push notifications for matching diamonds. Real-time ERP integration for bi-directional inventory sync. Tiered buyer verification with automated KYC/AML/OFAC screening. Multi-tier pricing logic synced from ERP. Quote request and negotiation workflow. Secure payment processing supporting wire transfer, letters of credit, and multi-currency settlement with FX rate locking. Mobile-first design for buyers managing high-value transactions on the go.

SolGuruz Involvement

Here is how our development team emphasized UX/UI design and full-stack development of the B2B diamond marketplace and ERP integration architecture.

Product Architecture & UX/UI Design

Our team conducted stakeholder interviews, competitor teardowns (RapNet, IDEX Online, Polygon), and user research across 4 personas: B2B buyer, sales team, inventory manager, admin. We designed information architecture, wireframes, interactive prototypes, and a full design system in Figma. Distinct visual treatments per persona sharing a cohesive design language. Usability testing ensured smooth navigation of complex diamond search and quote workflows.

Full-Stack Development & ERP Integration

React.js + Next.js web portal with server-side rendering for SEO. Flutter mobile apps (iOS + Android) with biometric login and offline access. Node.js backend with dedicated ERP synchronisation layer, real-time inventory sync, quote management, and multi-currency payment processing. AWS infrastructure with EC2, RDS, S3, CloudFront. OAuth 2.0 authentication, encryption (TLS 1.3 in transit, AES-256 at rest), AWS firewalls, source code obfuscation, automated backup, and compliance-ready architecture for Kimberley Process + OFAC screening.

SolGuruz B2B Diamond Marketplace Development Process - From Discovery to Launch

This case study was delivered using SolGuruz 10-stage development lifecycle, scaled for diamond industry compliance overhead and ERP integration complexity.

1 Stage 01 - Discovery & Diamond Industry Scoping

Stakeholder interviews to understand operational reality inventory volume, buyer base size, ERP system in use, compliance scope, multi-currency settlement needs. Competitor teardowns across industry aggregators (RapNet, IDEX Online, Polygon, Get Diamonds) and brand-owned diamond platforms. Deliverable: discovery document, prioritized feature list, locked Phase 1 scope.

2 Stage 02 - Requirement Analysis & Documentation

User stories and acceptance criteria for every workflow across verified buyer, sales team, inventory manager, and admin roles. User flow diagrams for buyer verification, inventory browse, quote request, order placement, payment, and fulfillment. Data flow diagrams for ERP synchronisation and Kimberley Process documentation.

3 Stage 03 - UX/UI Design

Information architecture, wireframes, interactive prototypes, and full design system in Figma. Designed against four primary personas the verified B2B buyer evaluating high-value purchases, the sales team managing buyer relationships, the inventory manager configuring stock and pricing, the admin running operations. Distinct visual treatments per persona sharing the same design language.

4 Stage 04 - Architecture & ERP Integration Planning

System design covering Flutter state management, web frontend (React.js + Next.js) architecture, Node.js backend API contracts, ERP synchronisation layer, payment processor integration, and AWS infrastructure topology. Database schema for users, buyers (with verification status and tier), diamonds (with full 4 Cs and certification data), quotes, orders, and audit logs.

5 Stage 05 - Web Portal Development

React.js + Next.js web portal with server-side rendering for diamond detail pages and category landing pages. Component library aligned to the design system. Three interfaces: verified buyer portal, sales team dashboard, admin panel.

6 Stage 06 - Mobile App Development (Parallel)

Flutter build for iOS and Android, single codebase with platform channels for biometric authentication, native push notifications, and image gallery performance optimisation.

7 Stage 07 - Backend, ERP Sync & Payment Integration

Node.js backend with adapter modules for ERP synchronisation, payment processing, certificate authentication APIs, and notification dispatch. RESTful APIs documented in Swagger. Real-time inventory sync between ERP and marketplace database.

8 Stage 08 - Quality Assurance & Compliance Testing

Functional testing across 20+ device profiles covering iOS and Android, desktop browsers, and varying network conditions. End-to-end testing of buyer verification, quote-to-order, payment, and ERP sync flows. Independent security review against OWASP Top 10. Compliance verification for Kimberley Process documentation and OFAC sanctions screening.

9 Stage 09 - Launch & App Store Submission

Phased rollout: web admin panel launched first for inventory configuration and buyer onboarding, then iOS and Android apps submitted to App Store and Google Play. Privacy policy review for GDPR compliance (Belgium / EU jurisdiction).

10 Stage 10 - Post-Launch Support & Iteration

2-week sprint cadence for performance fixes, UI refinements, and feature additions based on buyer and sales team feedback. Critical bugs fixed within 24 hours, high-priority within 72 hours. Quarterly performance reviews covering buyer onboarding rate, quote-to-order conversion, average order value, and ERP sync accuracy.

Solution We Provided

Here is precisely how the client's B2B diamond marketplace displayed the different categories of diamonds and gems after going live. Here are the results from a smooth user registration process to robust backend development:

Tirth Patel

Sr. Business Analyst, SolGuruz | CRM Specialist

Expert Insight

The core of this system is not the marketplace UI, it's the synchronization engine. We engineered a real-time ERP integration layer that handles inventory updates, pricing tiers, and order flows without duplication or lag. Everything else sits on top of that foundation.

Direct insight from the SolGuruz team that built this B2B diamond marketplace

B2B Diamond Marketplace Development Cost & Timeline in 2026

Based on this engagement and other diamond commerce builds, here are the B2B diamond marketplace development costs in 2026 across three common scope tiers:

MVP B2B Diamond Catalog

Tier 1

Buyer Verification

Single-tier verified buyers, basic KYC

Platforms

Web-only

ERP & Compliance

Manual inventory upload, single payment flow, basic compliance

Timeline

16-20 weeks

Cost Range

$60,000-$110,000

Mid-Scope B2B Diamond Marketplace (this case study tier)

Tier 2

Buyer Verification

Multi-tier verified buyers, full KYC, OFAC screening

Platforms

Web + iOS + Android (this case study scope)

ERP & Compliance

ERP sync, quote management, multi-tier pricing, Kimberley Process documentation

Timeline

24-32 weeks

Cost Range

$110,000-$220,000

Full-Scope Diamond Trading Ecosystem

Tier 3

Buyer Verification

Multi-tier verified buyers + dealer-to-dealer trading + escrow

Platforms

Web + iOS + Android + Trading floor integration

ERP & Compliance

Real-time ERP sync, RapNet API integration, escrow, multi-currency settlement, full Kimberley Process + OFAC + AML automation

Timeline

32-48 weeks

Cost Range

$220,000-$500,000+

ERP Inventory Synchronisation - The Strategic Differentiator

ERP inventory synchronisation is the single most important architectural decision in B2B diamond marketplace development. It separates serious B2B platforms from generic e-commerce templates pretending to handle diamonds. Implementation covers four layers:

Real-Time Inventory Sync

The client's ERP system is the source of truth for diamond inventory. Every status change - new stone added, sold, allocated to a buyer, returned, regraded - happens in the ERP first. The marketplace database receives near-real-time updates through API webhooks (under 30 seconds for status changes). This eliminates the data drift typical when marketplace and ERP are managed separately.

Bi-Directional Data Flow

Order events flow back from the marketplace to the ERP automatically: buyer places order → ERP marks stone as allocated, payment confirmation → ERP marks stone as sold, shipment → ERP updates location and triggers customs documentation. The sales team works in their familiar ERP interface; the marketplace handles the digital touchpoints.

Diamond Data Structure Aligned to Industry Standards

Diamond records carry industry-standard fields: stone ID, certificate number, certificate authority (GIA, IGI, HRD), 4 Cs (Cut, Color, Clarity, Carat), shape, fluorescence, polish, symmetry, measurements, depth percentage, table percentage, Rapaport price benchmark, and Kimberley Process origin documentation. The schema matches what RapNet, IDEX, and other industry aggregators use - making future integration with industry data feeds straightforward.

Multi-Tier Pricing Logic in Sync

Pricing rules live in the ERP (where the sales team manages buyer relationships) but execute in the marketplace (where buyers see prices). Tier rules sync automatically: long-term high-volume buyer adjusts to higher tier with volume threshold, payment-term-based discounts apply at quote time, negotiated overrides flow back to the ERP for record-keeping. The buyer sees consistent pricing whether they ask the sales team or check the marketplace directly.

Key Features Built

Diamond Catalog with 4 Cs Categorisation

Industry-standard diamond catalog organised by Cut (Round, Princess, Oval, Emerald, Asscher, Pear, Cushion, Marquise, Radiant, Heart), Color (D-Z scale), Clarity (FL, IF, VVS1-2, VS1-2, SI1-2, I1-3), and Carat weight (with sub-millimeter measurement precision). Fluorescence, polish, and symmetry as secondary filters. Origin certification surfaced in detail view.

Advanced Multi-Parameter Search

Buyers filter inventory by multiple parameters simultaneously: 4 Cs ranges, certificate authority, price range (in buyer's preferred currency), stone availability status, and origin certification. Saved searches push notifications when matching diamonds enter inventory.

Certificate (GIA / IGI / HRD) Integration

Each diamond record links to its grading certificate from GIA, IGI, HRD, or other recognized authorities. Certificate authenticity verifies via direct API integration with grading laboratories where available. Buyers download certificate PDFs and verify report numbers independently.

Multi-Tier B2B Pricing

Verified buyers see tier-specific pricing based on their account configuration. Tier assignment factors volume history, payment terms, and trade relationship duration. Pricing visible only to verified logged-in buyers public catalog shows availability without prices.

Quote Request & Negotiation Workflow

High-value diamonds route through the quote-and-negotiation flow rather than instant checkout. Buyers request quotes, sales team responds with tier pricing and payment terms, multi-round negotiation history tracked, quote expiry enforced. Approved quotes convert to orders in one click.

Secure High-Value Transaction Processing

Wire transfer and letter of credit support for transactions running $50K-$5M+ per order standard B2B diamond commerce sizes. Multi-currency settlement (USD, EUR, others) with automatic FX rate locking at quote time. Card payment available for smaller transactions where appropriate.

Kimberley Process & Compliance Documentation

Automated Kimberley Process Certification Scheme documentation generation for cross-border diamond movement. OFAC sanctions screening at buyer verification and at every transaction (especially relevant post-Russia diamond sanctions enacted 2024). KYC and AML documentation flows for high-value buyer onboarding.

Order Tracking & Customs Documentation

Order tracking from confirmed payment through customs clearance to delivery. Auto-generated commercial invoice, packing list, and customs declarations. Real-time shipment status from the integration of international logistics providers.

Mobile-Native Buyer Experience

Native iOS and Android apps for buyers managing inventory access, quotes, and orders on the move. Push notifications for quote updates and order milestones. Offline access to recent quotes and orders. Biometric login for fast app re-entry.

Why an Antwerp Diamond Company Needed a Custom B2B Diamond Marketplace

Antwerp is the global diamond trade capital, where 80% of rough diamonds and 50% of polished diamonds pass through every year (Antwerp World Diamond Centre). Building a B2B diamond commerce platform for an Antwerp client carries specific market context that off-the-shelf platforms don't serve:

Multi-Currency, Multi-Region Buyer Base

Antwerp diamond companies serve buyers across Europe, North America, the Middle East, India, and East Asia. Multi-currency settlement is table stakes, not optional. Off-the-shelf platforms typically default to a single base currency; custom builds let the Antwerp client price natively in USD, EUR, or buyer-preferred currency.

EU GDPR Compliance

Belgium operates under EU GDPR for personal data processing. B2B buyer data, sales relationship history, KYC documentation, and AML records all fall under the GDPR scope. Custom builds implement consent capture, right-to-erasure flows, and data portability natively.

Post-Russia Sanctions Compliance

The EU and US enacted Russia diamond sanctions in 2024, requiring origin tracing and OFAC sanctions screening for diamond transactions. Antwerp diamond companies face the strictest compliance overhead globally. Custom platforms implement OFAC sanctions screening at buyer verification and at every transaction, not just at onboarding.

Brand Authority in a Crowded Market

Antwerp has hundreds of diamond trading companies. Generic Eventbrite-style platforms put platform branding ahead of supplier branding; a customer who books through RapNet experiences RapNet's brand more than the supplier's. For an Antwerp diamond company building long-term buyer trust, brand-owned commerce is a strategic infrastructure.

Security & Compliance Implemented

B2B diamond marketplaces processing high-value transactions (orders running $50K-$5M+), KYC documentation, and Kimberley Process records have a high security bar. SolGuruz implemented multi-layered security covering network, data, cloud, application, and endpoint layers.

Data Encryption

All buyer and inventory data is encrypted in transit using HTTPS with TLS 1.3 and at rest using AES-256 full-disk encryption. Diamond imagery and certificate PDFs encrypted in S3 storage.

OAuth 2.0 Authentication

Token-based authentication with scope-based permissions across verified buyer tiers, sales team, inventory manager, and admin roles. Refresh token rotation for session security. Multi-factor authentication for high-tier buyer accounts and admin access.

AWS Firewall Rules

Configured firewalls on AWS instances and databases to allow controlled access. Admin endpoints require IP allowlisting. ERP integration endpoints accept connections only from the client's ERP server IP range.

Source Code Obfuscation

Release builds of iOS and Android apps are obfuscated to make distributed binaries harder to tamper with or reverse-engineer.

Automated Backup & Rollback

Cloud instances take scheduled backups every 4 hours with automated rollback capability. Inventory and order data replicated across availability zones for high availability.

KYC, AML, & OFAC Sanctions Screening

Automated buyer verification workflow integrating KYC documentation review, AML screening, and OFAC sanctions list checks. Real-time sanctions screening at every high-value transaction (post-2024 Russia diamond sanctions compliance).

Kimberley Process Compliance

Automated Kimberley Process Certification Scheme documentation for cross-border diamond movement. Origin tracing per certificate.

EU GDPR Compliance

EU GDPR compliance for European buyer data. Right-to-erasure flows, consent capture, data portability export, and breach notification procedures implemented.

Top B2B Diamond Marketplaces in 2026 - Competitive Analysis

The 2026 B2B diamond commerce market is structured into three lanes: industry-wide aggregators, custom brand-owned marketplaces, and dealer-to-dealer trading platforms. Here is the 2026 positioning:

Platform

Strength

Market Position

Limitation

Strength

Market Leadership

Largest diamond trading platform globally with 1.5M+ diamonds listed and pricing benchmarks (Rapaport Price List)

Market Position

Industry Standard

Industry standard for diamond pricing and B2B inventory listing. Founded in 1978; digital platform since 1996.

Limitation

Aggregator Model

In an open aggregator model, every dealer competes on price. Generic UX. Subscription-based access. RapNet branding ahead of supplier branding.

Strength

Content & Analytics

Diamond trading platform with online inventory listings, pricing, news, and analytics. Strong India and Israel diamond bourse presence.

Market Position

Major industry aggregator complement to RapNet. Strong in rough diamond reporting.

Limitation

Legacy Platform

Same aggregator limitations. Closed ecosystem. Less polished UX than newer platforms.

Strength

Network Features

Diamond trading network with B2B marketplace, broadcast messaging, and member networking

Market Position

Regional Strength

Established mid-size network. Strong in the North American jewelry retailer market.

Limitation

Network Limitations

Network model rather than direct commerce. Membership-based access. Limited mobile experience.

Strength

Modern UX

Newer diamond trading platform with a focus on transparent pricing and quality verification

Market Position

Growing Presence

Growing industry player with modern UX. Free for buyers.

Limitation

Scale Challenge

Smaller inventory than RapNet / IDEX. Building brand recognition.

Strength

Escrow Services

Dealer-to-dealer trading network with escrow services and member verification

Market Position

Specialised Market

Specialised dealer network. Strong in trade-only channels.

Limitation

Limited Reach

Member-only model. Not consumer-facing or direct-to-buyer. Specialised use case.

Project Outcome

The B2B diamond marketplace was delivered as a multi-platform engagement covering web, mobile, backend, ERP integration, admin panel, and AWS cloud infrastructure. Outcomes:

Multi-platform delivery completed across responsive web (React.js + Next.js), iOS, Android (Flutter), and admin dashboard

ERP inventory synchronisation operational with real-time bi-directional data flow

Multi-tier B2B pricing live with verified buyer onboarding workflow

Diamond catalog with 4 Cs categorisation and certificate (GIA / IGI / HRD) integration deployed

Quote request and negotiation workflow operational

Secure payment processing for high-value transactions (wire transfer, letter of credit, multi-currency)

Kimberley Process documentation automation operational for cross-border diamond movement

KYC, AML, and OFAC sanctions screening implemented, critical for post-2024 Russia sanctions compliance

Multi-layered security implemented (encryption, OAuth 2.0, AWS firewalls, source code obfuscation, automated backup, GDPR, ISO 27001:2022 + 9001:2015)

Tech Stack That Powers This B2B Diamond Marketplace

Stack decisions were driven by three constraints: cross-platform feature parity across web and mobile, real-time ERP synchronisation at scale, and high-value transaction security with Kimberley Process and OFAC compliance.

What Our Client Has To Say

A verified Clutch review from Kalpesh Zalavadiya, Managing Director of DiamNow, after we delivered the B2B diamond trading marketplace - covering the ERP-integrated catalog architecture, KYC workflows, and the multi-tier pricing engine that anchored the launch.

5.0

Diamond & Jewelry

Custom Software Development, Design and App Development for B2B Diamond Platform

Since partnering with SolGuruz, the client has gained an all-encompassing solution to provide their customers. The team accomplishes their goals with agility, and internal stakeholders are particularly impressed with the vendor's comprehensive approach to support and maintenance.

Summarized from Kalpesh Zalavadiya's Clutch review

Kalpesh Zalavadiya, Managing Director, DiamNow

Surat, India

Nov. 2021 - Ongoing

Verified review on Clutch

Frequently Asked Questions

What is a B2B diamond marketplace?+

A B2B diamond marketplace is a platform where verified buyers trade directly with suppliers using real-time inventory and tier-based pricing. Transactions are high-value ($50K-$5M+), and access is restricted to approved businesses. It differs from eCommerce by using ERP-synced data, not static listings.

How do I choose a B2B diamond marketplace development company?+

Look for proven ERP integration, compliance expertise (KYC, AML, Kimberley Process), and cross-platform delivery. A clear tech stack and security certifications like ISO 27001 are strong indicators. Case studies with real implementations matter more than generic portfolios.

How much does B2B diamond marketplace development cost in 2026?+

Costs range from $60K-$110K for MVPs to $220K+ for full-scale platforms. Mid-level builds with ERP sync and mobile apps typically fall between $110K-$220K. Compliance features can add 15-20% to the overall cost.

How long does it take to build a B2B diamond marketplace?+

An MVP takes around 16-20 weeks, while mid-scale platforms need 24-32 weeks. Advanced ecosystems with integrations can extend to 32-48 weeks. ERP sync and compliance workflows usually take the most time.

How does ERP inventory integration work?+

ERP acts as the source of truth, syncing inventory with the marketplace in near real-time. Updates flow both ways: inventory to the platform and orders back to ERP. Data includes stone specs, pricing benchmarks, and certification details.

Can SolGuruz build a platform like RapNet or IDEX?+

Yes, but with a different approach to custom, brand-owned marketplaces. Instead of competing listings, you control pricing, buyers, and data. This gives better long-term value for established diamond businesses.

What payment infrastructure is required?+

Most transactions use wire transfers or letters of credit due to high order values. Platforms support multi-currency payments and FX rate locking at the quote stage. Compliance checks like OFAC screening run during each transaction.

How does buyer verification work?+

Buyers must complete KYC, AML checks, and business verification before access. This includes documents like licenses, tax IDs, and trade references. Verified buyers receive tier-based pricing and possible credit terms.

What compliance frameworks are required?+

Key frameworks include Kimberley Process, OFAC sanctions, KYC, and AML. GDPR and international trade regulations also apply to global platforms. Automation helps, but manual review is still needed in edge cases.

Custom marketplace vs RapNet or IDEX. What's the difference?+

Aggregators list your inventory alongside competitors with limited control. Custom platforms give full ownership of pricing, data, and buyer relationships. They require buyer acquisition but offer better long-term ROI.

Build a Diamond Marketplace That Scales With Your Business

We design and engineer high-value B2B platforms with real-time inventory, buyer verification, and secure transactions tailored to your workflow.

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Key Outcomes

6+ Month

Delivery Timeline

4 Platforms

Web, Mobile, Admin, Website

5 Layers

Enterprise-Grade Security