About - Sell Diamonds NYC

Our Story

Built on Fairness, Sustained by Trust

Sell Diamonds NYC opened its doors in the early 1990s in the building that defines the global diamond trade: 30 West 47th Street in midtown Manhattan. At the time, there were a handful of buyers willing to purchase diamonds from the public — but very few who would do so with genuine transparency and respect for the seller.

We decided to be different. From day one, our approach has been to explain exactly how we value a diamond — what the cut grade means, how color affects price, what clarity levels you're really dealing with — so sellers can leave knowing they received a fair evaluation, not just a quick lowball offer.

That commitment built our reputation. Sellers who came to us once told their friends, their families, and eventually returned themselves. Today, we are the most trusted name in diamond buying in New York City.

Expertise & Credentials

Why Our Appraisals Are the Most Accurate in NYC

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GIA-Trained Gemologists On Staff

The Gemological Institute of America is the world's foremost authority on diamonds. Our team has completed GIA-recognized education, meaning we evaluate diamonds with the same rigorous standards used by laboratories worldwide — not guesswork.

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Rapaport-Priced Offers

We price every diamond against the Rapaport Diamond Report, the industry's definitive wholesale pricing benchmark. This ensures our offers are anchored in real market data, not arbitrary figures designed to maximize our margins.

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Loupe & Microscope Evaluation

Every stone is examined under 10x and 40x magnification before we quote a price. We assess inclusions, surface blemishes, fluorescence, girdle condition, and cutting proportions — factors that significantly affect value.

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Active Market Connections

We maintain live relationships with diamond dealers, private collectors, estate buyers, and auction houses. This broad network lets us make stronger offers than buyers who can only sell into limited channels.

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Confidential Process

Every transaction is handled with full discretion. Our private suite on the 8th floor ensures a secure, low-stress environment far removed from the chaos of the street-level diamond exchange below.

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No Obligation, Ever

We believe in informed decisions. After our evaluation, you'll receive our best offer — and you're completely free to accept, decline, or take time to think. No pressure. No high-pressure sales tactics. Ever.

Where We Operate

The Heart of NYC's Diamond District

The New York Diamond District — concentrated on West 47th Street between 5th and 6th Avenues — is the world's busiest single-block diamond marketplace. More diamonds change hands here than anywhere else on the planet.

Being embedded in this environment for 30+ years gives us an unmatched advantage: we know the real market. We see what comparable diamonds sell for, what demand looks like in real time, and what buyers at every level of the market are willing to pay.

That knowledge translates directly into better offers for our sellers. When you bring us a diamond, you're not dealing with a suburban buyer reading off a price sheet. You're dealing with insiders who live and breathe this market every day.

Our office:
30 West 47th Street, Suite 809
New York, NY 10036
212-382-3700

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Location

30 W. 47th St, Suite 809

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In Business Since

1993

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Diamonds Purchased

Thousands served

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Transactions

From $500 to $1M+

Our Philosophy

"A fair evaluation isn't just good ethics — it's good business."

We have always believed that the best way to build a lasting business is to pay people exactly what their diamonds are worth. No gimmicks. No lowballing. No bait-and-switch. Just honest expertise, applied consistently.

Start With a Free Appraisal

About Sell Diamonds NYC