GIA to Screen for Synthetics in Melee

GIA’s new device can screen 1,800 stones per hour

In the next few months, GIA will unveil a screening service for detecting lab-grown diamonds in batches of melee, it confirms.

The service uses an automated device that can screen synthetics and treated diamonds from batches of D-to-Z round melee-size stones. The machine can also sort melee by size and color. The cost of the service will be size-dependent but will likely start at about 10 cents per stone, GIA said.

The device can process approximately 1,800 stones per hour, from 0.005 ct. to 0.2 ct. Once sorted, the melee will be sealed in secure packaging for return to the client or shipment to a third party. Unlike the melee-screening device that De Beers has developed, the machine will not be offered to the trade.

 

 

   

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