The Swiss Gemmological Institute SSEF has developed a new device that can analyze large quantities of melee stones and flag possible synthetics.
The lab’s patent-pending Automated Diamond Spectral Inspection (ASDI) can look at round polished diamonds ranging from 1 mm to 3.8 mm in diameter, at a rate of 4,000 stones per hour, the lab says. It can conclusively identify naturals and flag possible synthetics and stones treated by HPHT.
De Beers has developed a similar device, and New York City lab AG&J has developed a way to batch-test melee for nonnatural stones.
At press time no information was available about the device’s cost.
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