AGL Discusses the Latest “New” Ruby Heat Treatment Coming out of Thailand
For more than a year, yet another “new” ruby heat treatment has been entering the global marketplace. As this treatment was first acquired in Bangkok by wholesalers and manufacturers, then distributed through other markets across the world. issues arose as how to properly represent and disclose this treatment. Of concern fro the industry was whether it had to be disclosed similarly to the lead-glass treated ruby, known as Composite Ruby and what special care requirements did it carry. Following its initial investigations, the American Gemological Laboratory released its conclusions and policies for their reports. The findings indicate this latest treatment is essentially the same as the more traditional flux-assisted heating of rubies, with some additional features.
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