Digital auction house - 47th Street, New York
Where rare stones find their new homes.
Forty7 is a curated digital auction platform for exceptional stones, colored diamonds, antique diamonds and remarkable cuts. Stones that deserve a better platform than they have today. Open to serious buyers worldwide.
Fully digital
Browse anywhere
View every lot online - detailed grading reports, high resolution images & videos - from anywhere in the world.
Bid in real time
Anonymous, competitive bidding that runs on a fixed schedule. No phone calls, no back-and-forth.
Close with confidence
Winning bids are confirmed instantly. Transactions are transparent, traceable, and secure end to end.
Why Forty7
Built for the distinctive
Fancy colors, old cuts, estate pieces, exceptional makes - where value is subjective and commodity platforms fall short
Motivated sellers, real reserves
Every lot enters with a reserve set to move. Buyers bid knowing there is genuine value on the table, not a fishing exercise.
Curated, always
Not everything makes it onto Forty7. Every stone is reviewed and accepted based on quality, character, and rarity. Curation is the product.
How it works
Stones are sourced and vetted
Each lot is reviewed and accepted based on quality, rarity, and suitability. Specialist notes accompany every stone.
Registered buyers preview and bid
Access the full catalog online before bidding opens. Bid anonymously on any lot, from anywhere, on any device.
Stones close at true value
Winning bids reflect genuine demand. Sellers receive real offers. Buyers receive stones worth having.
Explore our How It Works page to learn more.
"Finally a platform where unusual stones find the right buyers."
Verified buyer — New York
Subscribe
Forty7 is the modern auction house for remarkable stones. Subscribe below for early access to upcoming auctions, exceptional discoveries, and market insights.