Allow your jewelry to continue its story

We are fine jewelry 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.

4 Simple Steps

Tell us about your jewelry

Complete the form below with information about your jewelry

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 jewelry. There’s still no commitment to sell

Get Paid Promptly

Accept our final offer? We’ll overnight you a check. Rather not? We’ll safely return your jewelry 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


Which fine jewelry brands do you buy?

We aim to offer the best possible price for items from Tiffany & Co, Cartier, Bulgari, Van Cleef & Arpels, Pomellato, Buccellati, and more. If you have an item to sell that does not appear on this list, please just submit an inquiry and we will get straight back to you.

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.

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.

Begin the process by telling us about your JEWELRY

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


Our jewelry holds the stories of our most memorable moments and biggest celebrations. However, sometimes we’re ready to let that jewelry continue its story as part of someone else’s collection. When that time comes, at The Diamond Oak it’s our honor to assist you in taking the steps needed to sell your fine jewelry, including Bulgari, Cartier, David Webb, Graff, Angela Cummings, Harry Winston and Tiffany jewelry, as well as other fine non-branded jewelry.

As fine jewelry specialists with generations of experience serving jewelry lovers across the globe, we work with you to create a selling experience that is straightforward, transparent, and gratifying. If you’ve been thinking you want to sell your diamond ring or jewelry, we’re here to support and guide you.

Sell your jewelry with The Diamond Oak in our simple four-step process

Because we’re an intergenerational family with deep roots in the jewelry industry, we understand that the process of selling a beloved piece of jewelry is often rife with emotion. With that in mind, we’ve created a simple and supportive four-step process to assist our valued guests when you make the decision to sell Tiffany and other fine jewelry.

  • Step one: Tell us about your jewelry. The more information you can provide when you sell a Tiffany diamond ring—or one from other fine makers like Bulgari, Cartier, David Webb, Graff or Harry Winston—the better job we can do to help you get the best value. Our online form makes it easy to fill in all the details, attach photos, and get the process started. From here, we can prompt you for further details so when you sell a diamond ring, it shines above other comparable sales items.
  • Step two: Review your estimate. At The Diamond Oak, we have generations of experience in helping our clients to sell Tiffany jewelry and other fine jewelry, including non-branded items. That experience has provided us with an intuitive and expert eye towards precisely identifying the value that will attract the right buyer while giving our sellers the maximum return on their investment. We know this is the most emotional step in the sales process. That’s why we promise to respond with your estimate within two-days’ time or sooner to put your mind at ease.
  • Step three: Ship with confidence. Whether you are ready to sell your Tiffany engagement ring, a Bulgari diamond, a one-of-a-kind Cartier piece, or other fine jewelry, we ensure you can ship with confidence. Once you’ve determined you’re happy with your estimate, The Diamond Oak secures overnight, fully insured shipping so you can feel safe when you sell to us. Because we respect the emotional ties our clients have to their jewelry pieces, it’s important for us to let you know at this point that should you change your mind, there is no commitment to sell.
  • Step four: Prompt payment. The most rewarding step when you sell Tiffany jewelry and other fine jewelry with The Diamond Oak is Cashing your check! We send our sellers a check via trackable priority as soon as we reach a suitable estimate and receive your shipment. We pride ourselves on being trustworthy, reliable, and professional diamond merchants who get you results when you decide to let your jewelry continue its story elsewhere.

What to expect when you sell Tiffany jewelry and other fine jewelry with The Diamond Oak

At The Diamond Oak, we pride ourselves on securing great outcomes for our fellow jewelry sellers. When you sell your engagement ring or other fine jewelry and ship it to us, you typically receive your payment within four to five business days from the day of your initial shipment. We also understand that you may have questions along the way. It’s our pleasure to be available anytime during your sales process to answer any questions as they arise. We take great pride in taking care of sellers from the moment they connect with us.