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A Unique Experience For All
Fine Jewelry
Certified Diamonds
Fine Swiss Watches
Diamond Earrings
Estate Jewelry
Gemstones
Sterling Silver
Coins & Bullion
Let Our Expertise Be Your Guide
A Unique Experience For All

Fine Jewelry • Certified Diamonds
Fine Swiss Watches • Diamond Earrings
Estate Jewelry • Gemstones
Sterling Silver • Coins & Bullion

Let Our Expertise Be Your Guide
Slide
A Unique Experience For All
Fine Jewelry
Certified Diamonds
Fine Swiss Watches
Diamond Earrings
Estate Jewelry
Gemstones
Sterling Silver
Coins & Bullion
Let Our Expertise Be Your Guide
A Unique Experience For All

Fine Jewelry • Certified Diamonds
Fine Swiss Watches • Diamond Earrings
Estate Jewelry • Gemstones
Sterling Silver • Coins & Bullion

Let Our Expertise Be Your Guide
Slide
A Unique Experience For All
Fine Jewelry
Certified Diamonds
Fine Swiss Watches
Diamond Earrings
Estate Jewelry
Gemstones
Sterling Silver
Coins & Bullion
Let Our Expertise Be Your Guide
Slide
A Unique Experience For All
Fine Jewelry
Certified Diamonds
Fine Swiss Watches
Diamond Earrings
Estate Jewelry
Gemstones
Sterling Silver
Coins & Bullion
Let Our Expertise Be Your Guide

With 40 years of service as the premier jewelry buyer and seller in the Maryland, Virginia and the D.C. area, we have earned our reputation based on integrity and the delivery of an enhanced experience for our customers. Graduate gemologists and our watch experts on staff allow for the most exact and fair transactions in buying and selling. Thanks for visiting Diamond Exchange.

We Are Always Buying

When you are ready to sell your diamond ring, unwanted jewelry, fine watches, sterling silver, estate jewelry, coins or other gemstones and precious metals items, we will make a competitive offer.

Our buyers are experts in valuing diamonds with GIA certificates, or certificates from IGI, AGS, HRD or EGL. No certificate? No problem – we will grade the diamond according to Gemological Institute of America standards. We have several GIA Diamond Graduate gemologists on staff.

Have you checked the value of your Swiss watch? If you want an offer for your Rolex, Patek, Omega, Breitling, Panerai, JLC or other fine watch, please bring it in to one of our locations.

We Deliver A First Class Experience

When you visit one of our Diamond Exchange USA locations, you’ll be greeted by one of our friendly owners or staff representatives. You’ll deal direct with experts in their field. And when you sell, payment is immediate.

Diamond Exchange Certifications
Diamond Exchange Payment Options

Please fill out this short form and tell us about your items.
We’re happy to provide options if you want to sell. 


Four locations to serve you. No appointment necessary.
Click or drag files to this area to upload. You can upload up to 2 files.
A quick photo or two with your smartphone is all we need.

Shop Our Collection Of New and Pre-Owned Diamonds, Jewelry & Watches

Bridal
Engagement Rings & Weddings Bands

Fine Watches
Watches like Rolex, Omega, Patek

Diamond Jewelry
Earrings, Bracelets, Pendants, Rings

Estate Jewelry
Art Deco, Victorian, Edwardian & More

Gemstone
Colored Gems & Fashion Gemstone

Looking for something unique and custom created just for you? Learn more about our one-of-a-kind, expertly crafted CAD ring mountings and other amazing creations.

Are you looking for a particular brand, jeweler or watch? Please search our store.

We Create Beautiful Jewelry

Looking for a unique, custom crafted piece of jewelry?
We’ve created thousands of one-of-a-kind jewelry designs for our satisfied clients.

Our Customers Love Us! Please Read Our Reviews.

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My fiancé came here to get my custom-made engagement ring and I can't express how ecstatic I am with the outcome. I came across my dream designer ring a while back and sent it to my now fiancé, not really thinking much into it.

When he proposed I was completely surprised and fell in love with the ring-it is so stunning and sparkles for days. I often find myself just staring at it because it is so gorgeous! It looks exactly like my dream ring, but even more beautiful. Plus it is even more special because it was custom made by my fiancé and he worked closely with them to design the ring. He said he had a great experience working with Katie, who was very knowledgeable and patient with him.

I highly recommend this place!

Jesse L., Potomac, MD

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I looked on-line to find a jeweler to sell an older 30 year old Rolex watch. I called and spoke with Keith on the phone. I arrived 30 minutes later. It took Keith about 15 minutes and he made me a very fair offer right about where I was hoping to sell the watch.

He and the other employees were friendly and helpful. It was a great experience.

I would recommend Keith and Diamond Exchange.

Alan Soon, Rockville MD

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I have been buying jewelry at the Diamond Exchange for almost 18 years. I have loved every piece purchased there and have introduced so many friends and family members to the store.

I trust them completely, whether it is buying, selling, or even repairing an item.

Mimi Eschbacher, Bethesda, MD

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I recently sold some of my inherited US Gold Eagles bullion coins and several graded and slabbed collectible Morgan dollars to Andrew over in Cockeysville.

He was extremely knowledgeable and made an offer that was right where I was expecting. I had heard great things about Diamond Exchange and Andrew, so I'm glad I made the visit!

Richard Franke, Baltimore, MD

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I visited Diamond Exchange andI was given excellent prices for the pieces I sold (and I was also given honest advice to not sell a few pieces of silver because it wouldn't be as good of a value for me- and I appreciated the honesty).

I was in the market for a new diamond eternity band and went to Mervis to look/get pricing. When I went to the Diamond Exchange to get a repair done, I discovered they also make/sell new jewelry. Justin showed me the most beautiful 2-carat diamond eternity band. The diamonds were very high quality, equal to Mervis quality, yet the price was about half! I was overjoyed and purchased my beautiful diamond band from the Diamond Exchange! I couldn't be any happier - my experience was seamless and I will be a repeat customer for life!

Bonnie Z, D.C.

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As a first time ring buyer, this was a very stressful experience for me. Justin at the Diamond Exchange did a fantastic job walking me through the process and showing me the differences in diamonds. Through working with Justin and the Diamond exchange, I was able to get the EXACT unique setting and a fantastic diamond for my fiancee.

It made me very happy to give my fiancee the exact ring she wanted and she was extremely happy with the ring. I strongly recommend the Diamond Exchange.

Jason Leicht, Chevy Chase, MD

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Mak Isreal
Mak Isreal
16:04 25 Aug 21
Justin Carmody is the best! Everyone there is a specialist! I could feel that we were going to be taken care of by professionals the moment we entered. I didn’t have any doubts with Justin’s expertise and experience. This is an outstanding jewelry store. We were able to sell our previously purchased diamond solitaire ring from elsewhere and select a beautiful diamond eternity band with mesmerizing clarity and color. The quality in their fine selection is superior. Finally, my girlfriend is happy!
Brian Deska
Brian Deska
16:26 01 Jul 21
I had a great experience here. The service was excellent with very knowledgeable and educational professionals behind the counter. I learned a lot while I was there!
Cordell Creese
Cordell Creese
19:55 11 Jun 21
Went because I saw another review so I went and it was really simply to sell my 2 gold bars. Keith made the process super easy for my first time selling and had a good convo in the store. Highly recommend
smf32s
smf32s
14:04 02 Jun 21
This place is awesome. Keith is on your side and takes awesome care of you. The best of the best while still being a great value. Buy with confidence. I couldn’t be happier.
John Kaden
John Kaden
14:01 30 Apr 21
I have worked with Justin and Keith for over 25 years. They earned my business in the first item I purchased. They refunded me money when the diamonds that they charged me for weighed less what they charged. They could have taken advantage of me and I would have never known. I have referred all my friends to them and everyone has a great experience. These guys are the best.
See All Reviews
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We have four locations around Maryland, D.C. and Northern Virginia to serve you. Stop by during normal business hours, or make an appointment.

Cockeysville

Baltimore Diamond Exchange

11222 York Road
Cockeysville, MD 21030
410-329-1801
Tue – Fri: 10am – 6pm
Sat: 10am – 3pm

Columbia

Columbia Diamond Exchange

5550 Sterrett Place, Suite 309
Columbia, MD 21040
Opening January 2022
Mon – Fri: 10am – 6pm
Sat: Make Appointment

Rockville

Rockville Diamond Exchange

11136 Rockville Pike 
Rockville, MD 20852
301-230-1212
Mon – Fri: 10am – 6pm
Sat: 10am – 4pm

McLean

McLean Diamond Exchange

1750 Tyson’s Blvd. STE 1500
McLean, VA 22102
703-289-5128
Reservation Only
Make Appointment

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