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Supplier, Wholesaler or Marketplace: Which Is the Best Option for Your Lab-Grown Diamond Purchases in B2B?
In a fast-evolving jewelry market, choosing the right sourcing partner for lab-grown diamonds has become a strategic decision for jewelers, ateliers, and brands. Should you stick with a traditional supplier? Work with a wholesaler? Or embrace a new-generation digital marketplace? This article explores the strengths and limits of each model—and helps you choose the most effective solution for your business.
Traditional Supplier: Direct Relationship, Limited Offering
Working with a trusted long-term supplier often means building on a relationship rooted in confidence. They understand your needs, offer custom advice, and may adapt to your specific requirements.
But there are clear limitations:
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Limited to the supplier’s own catalog
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Low transparency on margins and sourcing
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Long lead times for specific stones
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Hard to meet growing customer expectations (traceability, certification, ethics)
In 2025, this model still fits some profiles, but often lacks the flexibility modern professionals require.
Wholesaler: Volume Access, Low Visibility
Wholesalers provide access to larger volumes at attractive prices. They aggregate various suppliers and may offer better deals.
However, the model remains intermediary :
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Vague sourcing: origin of stones is unclear
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No visuals before purchase
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Volume-driven logic not suited for small operations
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Fixed catalogs, limited options for specific needs (shapes, colors, certification)
B2B Marketplace: Autonomy, Traceability, Real-Time Access
B2B marketplaces are a true breakthrough in diamond sourcing. They give jewelers direct access to thousands of certified stones in real time, with unmatched transparency.
Key advantages :
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Access to 600,000+ certified diamonds (IGI, GIA, HRD)
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Powerful filters to find the exact stone (shape, carat, color, clarity, price…)
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360° videos to view before you buy
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Transparent pricing, no blind negotiation
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One-click ordering, 24/7, with tracked & insured delivery
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Order history, easy invoicing, and responsive customer support
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Quick Comparison
| Criteria | Supplier | Wholesaler | Marketplace |
|---|---|---|---|
| Stock visibility | ❌ | ⚠️ | ✅ |
| Real-time access | ❌ | ❌ | ✅ |
| Traceability / Certificates | ⚠️ | ⚠️ | ✅ |
| On-demand orders | ⚠️ | ✅ | ✅ |
| Autonomy / Flexibility | ⚠️ | ⚠️ | ✅ |
| Fit for new demands | ❌ | ⚠️ | ✅ |
Why Geminove Is Your Essential Ally
At Geminove, we’ve built a platform 100% dedicated to ethical jewelry and lab-grown diamonds. Our mission: give professionals seamless access to the global supply—without friction.
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100% Lab-Grown Diamond Focus
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600,000+ references, all certified
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Ultra-competitive professional pricing
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Free-to-use platform, no commitments
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Intuitive interface, built for jewelers
We believe the sourcing of tomorrow should be faster, clearer, and fairer.
The Bottom Line?
In 2025, the question is no longer “Should you change?” but “Which model brings the most value to your workshop?”
Between supplier, wholesaler, and marketplace, the difference lies in visibility, traceability, and control..
With Geminove, you take full control of your sourcing—while meeting the expectations of a new generation of customers.
Try the platform for free and get instant access to the world’s lab-grown diamond supply.
Certified, Ethical Diamonds of
tomorrow, available today
Join the first dedicated marketplace for lab-grown diamonds and access 600,000+ certified stones, direct from source, at the best prices exclusively for professionals.
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