We Buy Diamonds Long Island

We Buy Diamonds



Collectors Coins & Jewelry is the only diamond buyer & dealer on Long Island, that is always looking to purchase new inventory. We deal with a vast market of buyers & sellers to ensure you get top dollar for your jewelry and diamonds.

As one of Long Island’s oldest & most prominent diamond dealers, we pay top dollar for diamonds and diamond jewelry. Our expert gemologists evaluate your diamonds on the spot, insuring that your diamond never leaves sight.

Whether you are looking to sell a single diamond engagement ring, loose diamonds, or diamond jewelry, we will accommodate your every need.

Each of our 6 locations are staffed with trained a Gemologist who will take you through our analysis process to properly identify the current market value of your diamond and diamond jewelry. We regularly buy and appraise wedding bands, wedding rings, diamond engagement rings and diamond earrings as well as other types of diamond jewelry. Our business is based on educating the customer so that they can feel confident that they received the best price.


Check out one of our six locations