Screen Saviors? A Roundup of Tools to Test Your Diamonds

At a meeting on undisclosed synthetics in 2016, GIA chief ­laboratory and research officer Tom Moses lamented that people knew exactly what they wanted in a lab-grown diamond detector. “A black box,” he moaned. “For about 100 bucks. Sits on your counter.” Since then, the number of man-made diamonds being produced has only increased, as have the chances of those diamonds being sold undisclosed. For jewelers looking to protect the integrity of their supply, the need for a cheap, easy-to-use synthetic sniffer is more pressing than ever. The good news is there are now many devices that help detect lab-grown diamonds. The bad news: A lot of them cost a decent chunk of change. So far, the dream of a $100 black box hasn’t come to pass. Still, a few years back, there was considerable doubt over whether such a ­device was even possible. Now there are so many gadgets on the market t

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