The Diamond Trading Floor - 47th Street, New York

A transparent marketplace connecting motivated sellers with verified diamond buyers around the world. Bring a diamond to market, receive competitive bids, and transact with confidence.

Sold at auction

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.

In-house from start to finish.

Every diamond listed on Forty7 is reviewed, verified, graded, professionally photographed, and securely held by our team, allowing buyers to bid with complete confidence.

Unlike traditional auction houses, we don't require diamonds to be held for extended periods before auction. Our goal is to streamline the path from consignment to transaction, while offering highly competitive commission fees.

Founder · Nirvam Shah

Second generation, fifteen years in.

Nirvam Shah is a second-generation diamond expert with over 15 years of experience in manufacturing and wholesale distribution. Beginning his career in Belgium, he mastered the intricacies of sourcing, cutting, and trading before expanding into the U.S. market.

Recognizing the need for a more transparent and efficient way to trade diamonds, he founded Forty7, a platform designed to modernize auctions and serve as a valuable tool for the industry.

Why Forty7

Built for the market

Forty7 brings sellers and verified buyers together through competitive bidding, creating a transparent marketplace for diamonds that are ready to trade.

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 close at true value

Competitive bidding brings buyers together around each stone. Sellers receive real market demand, while buyers determine what they're willing to pay.

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.

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