The auction market for important diamonds and gemstones. Finally, in your hands.
GemmoPrice is the professional intelligence database built on 14 years of specialized auction results from the world's leading jewellery houses. Know what the market actually paid — not what it was asked.
Explore Pricing
Market intelligence. Not a price list.
Auction estimates versus hammer prices. Two numbers that together reveal the true sentiment of the market — for professionals who know how to read them.
Real market evidence
Every record shows the pre-sale estimate and the final hammer price. The gap between them is where real market knowledge lives.
Deep specialist search
Filter by pigeon blood, royal blue, Kashmir origin, Gubelin certificate, brand provenance, treatment, and 35+ additional parameters.
Images and original sources
Each record links directly to the original auction lot. Images, full descriptions, and sale context — exactly as presented on the day.
Built for professionals
Share search results with colleagues and clients. Build comparables, document valuations, and communicate market evidence with confidence.
Your professional observatory on the gem market
- 25,000+ important diamonds and colored stones
- 8 major auction houses — Sotheby's, Christie's, Bonhams, Phillips, Artcurial, Heritage, Koller, Boetto
- 35+ searchable fields across 10 languages and 9 currencies
See how it works
During the past 30 years, major auction houses have shaped the price discovery mechanism for important diamonds and colored stones. GemmoPrice makes that history searchable.
Learn more
The Swiss army knife of the serious gem professional
GemmoPrice is not an oracle — it is a professional intelligence platform. From market trend analysis to consignment strategy, it gives you the evidence to act with confidence.
- Benchmark and appraise with real data
- Identify the right market and auction house
- Spot trends, anomalies, and price movements
Trusted by professionals worldwide
From New York to Geneva, Hong Kong to Antwerp — GemmoPrice is the reference tool for those who work with important stones every day.
Martin Fuller
Jewellery Appraiser — McLean, Virginia, USA
I am very involved with both the National Association of Jewelry Appraisers and the American Society of Appraisers, and I believe your databases may help me do a better job of appraising.
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