ServicesSergio Nuncio prides himself on the service and services that he offers his customers at Jonathan’s Diamond Buyer.

Sell Your Estate, Antique, or other Fine Jewelry

We are always searching for all jewelry types. We purchase antique and estate jewelry, rings, bracelets, necklaces, and much more.

Sell Your Watches

Not only are we searching for antique and estate jewelry, but also for quality watches. The watches we buy include Rolex, Cartier, Patrick Philippe and many more.

Sell Your Diamonds

As a diamond buyer, we use GIA standards to grade the diamond you want to sell.  We will buy your diamond for the best price, based on cut, clarity, color and carat weight.

Sell Your Gold

If you have broken or unwanted gold and need cash fast, sell it to Jonathan’s Diamond Buyer. The process is safe, quick and highly satisfactory!

At Jonathan’s Diamond Buyer, our goal is to make the selling of your valuables as easy and painless as possible.  If you are interested in selling gold, diamonds, fine jewelry or watches contact Sergio Nuncio at (832)277-5725 or at