CAN A JEWELER QUICKLY SPOT A FAKE DIAMOND?

THE ANSWER

Usually yes. An experienced jeweller can spot most fakes in seconds. Glass feels different under a loupe. It has rounded edges, bubbles inside, and reacts to light differently. Cubic zirconia has more rainbow flash than diamond and weighs noticeably more. Moissanite shows a distinctive doubling effect when viewed through the table. A thermal tester gives an instant reading. It costs little and most jewellers have one on the counter. The one thing a jeweller cannot quickly spot is a lab-grown diamond. That requires specialised lab equipment. But lab-grown diamonds are real diamonds, not fakes. For glass and CZ, a jeweller knows within moments.

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