Be confident you’re in the safest hands when selling your diamond

We are diamond specialists with experience spanning generations. We’ll work with you to ensure every step of your experience is straight-forward, transparent and gratifying..

Our goal is to make sure you feel taken care of, from the moment you submit a sell request to when you receive payment for your jewelry.

Sell your diamond in 4 simple steps

Tell us about your diamond

Complete the form below with information about your diamond.

Click Here

Review your estimate

We’ll respond within two days with your estimate

Ship with Confidence

If you like your estimate, we’ll provide an overnight, fully insured shipping label for you to ship your diamond. There’s still no commitment to sell

Get paid promptly

Accept our final offer? We’ll overnight you a check. If you would rather keep your stone, we’ll safely return your diamond right away

Alon Mor examining a 10 carat Emerald Cut Diamond

Over the last 70 years, our family has bought and sold hundreds of pieces of fine jewelry and thousands of diamonds. We know that our reputation is the most valuable asset we have.

Your trust is paramount to us, so to ensure you feel secure throughout the process, we will provide you with a fully insured shipping label for your jewelry, at no cost or obligation to you, and open the package on camera to allow you total transparency.

If you have any questions about our process, please feel free to message Alon
directly, or call on (212) 799-7153.

Request an Estimate


I had the pleasure of working with Alon and Wendy when I decided to sell my engagement ring. They both made the process incredibly easy and Alon offered me the best price compared to other retailers I reached out to. I can't thank them enough for their professionalism, fast and clear communication, and their integrity. I'd recommend them to family and friends, and hope to be a buyer for their pieces sometime soon.

Alexie Agdeppa
1 / 3
Working with Alon was truly a seamless process. He is up front, responsive, kind and understanding. He explained the entire process and it ran exactly as he said it would. I highly recommend The Diamond Oak.

Emily Grodski
2 / 3
Excellent experience. Everything was quick and easy, and Alon offered the best price. Very pleased with Alon's timely responses to my inquiries, with the pre-paid overnight shipment of my ring, and the same day offer and payment.

J Harris
3 / 3


What size diamonds do we buy?

We buy diamonds of ½ carat up to 10 carats.

What quality diamonds do we buy?

We buy diamonds that are graded SI2 and better and with color grades of at least K color.

Do we buy Diamond jewelry?

Yes, we do buy diamond jewelry, mostly higher-end.

What size diamonds do we buy?

We buy diamonds of ½ carat up to 10 carats.

Do we buy signed jewelry?

Yes, we buy jewelry and will bid generously on jewelry from Tiffany & Co, Cartier, Bulgari, Van Cleef & Arpels, Pomellato, Buccellati, and more. Our goal is to provide you with the best price and value for your signed jewelry.

How long does the process take?

Most of the time you are paid within two to three days from the day you ship. When opting to get paid by PayPal, many times you will get paid the same day your package arrives in our office.

Is there anyone I can ask questions to about the process?

We are available any time during the process to answer any questions you might have. Our goal is for you to feel taken care of from the moment you submit a sell request, to receiving your payment for your diamond and jewelry.package arrives in our office.

Begin the process by telling us about your Diamond:

Prefer to connect by phone? Alon is standing by at +1 (646) 956-5766