Treated Diamonds: Knowledge Is Protection

The number of treated diamonds is growing. Here's a look at the four basic treatments - as well as synthetics - with tips on how to detect them No doubt about it, treated diamonds have become a big part of today's market. They're also becoming more sophisticated and difficult to detect. Treated diamonds - and disclosure of the treatment - have become such as concern that De Beers formed a committee about a year ago to keep tabs on how many fracture-filled, irradiated and otherwise altered diamonds reach the market each year; what percentage are disclosed; and what impact they might have on consumers. The committee also keeps gemological laboratories around the world abreast of new developments. De Beers admits it's extremely difficult to get accurate information on how many treated diamonds are produced and disclosed. But the second part of its mission - keeping in touch with gem l

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