Newer electronic diamond testers can distinguish between diamond, moissanite and cubic zirconia. These devices measure the electrical conductivity of a stone. Since mined diamonds, Moissanite and other simulated diamonds are all made of different material, they will all have different measures of electrical conductivity. Only a real diamond will test positive with an electric diamond tester. Most importantly, the brilliance and beauty of a stone cannot be measured by one of these devices. We’re so confident you’ll be impressed by our simulated diamonds, we invite you to take our Russian Brilliants Challenge and preview one of our stones yourself, risk free.