All jewelers know that in order to offer the best gems on the market, you must first be able to correctly identify the gem’s authenticity. Since so many gems are similarly colored, many are hard to recognize by sight alone. A professional jeweler needs to be able to recognize the variances in color, cut, and texture of different gems. Nationaljewelerssupplies.com offers a full line of gemological instruments for the professional jeweler. We supply Refractometers, Dichroscopes, Chelsea Filters, Polariscopes, and various gauges to help you in this process. At nationaljewelerssupplies.com you do not have to sacrifice quality when buying at our low prices.