We Buy Diamonds & Gemstones

Selling your personal jewelry can be an intimidating undertaking. Very few jewelers have the experience, expertise or the financial resources to pay a fair market price for fine antique and estate jewels. Choosing a reputable jewelry buyer to navigate you through the course of action is the most important aspect of the selling process. At Coin Mart Jewelry, we guarantee a pleasant and successful jewelry selling experience.

The list below is by no means complete as we are always buying beautiful antique and estate jewelry, diamonds, gemstones. We are particularly interested in purchasing older estate and antique diamonds and gemstones, with a premium paid for the original, vintage settings.

We specialize in both modern and older cut diamonds, and white to fancy colored diamonds from half a carat to sky's the limit. We pay competitive world prices from modern cut diamonds and higher than anyone else for antique diamonds, old mine diamonds, European-cut diamonds and rose-cut diamonds - especially in their original settings. Vintage engagement rings are more in demand today than ever before.


We buy Sapphires, Rubies and Emeralds, as well as virtually every other colored gemstone, providing they are of fine quality or an element of a fine piece of jewelry. Please check out the photos above to give you an idea of what we buy.

How We Determine Value

We determine the values of diamonds, gemstones by our expert gemologists. Diamonds and gemstones are valued for their quality and rarity and have added value when accompanied with a certificate of quality. Diamonds are evaluated based on the 4 C's - Carat, Cut, Color and Clarity.

At Coin Mart you can always expect to be treated honestly. Our goal is to build a relationship of mutual trust with our clients whether we are buying Diamonds, Precious Gemstones or fine antique and estate jewelry.

Copyright Coin Mart Jewelry 2012 • 396 E Street • Chula Vista • CA 91910 • 619.422.1123