The American Gemological Laboratories (AGL) has modified its disclosure policy regarding lead-glass-filled rubies.

Effective immediately, the AGL will identify these gems as composite rubies, listing their standard enhancement as heat and their additional enhancement as lead-glass.

Under comments, the AGL will state: "This ruby has been heavily treated using a high refractive index lead-glass to fill fractures and cavities, vastly improving the apparent clarity and potentially adding weight. The glass may be damaged by a variety of solvents. Stability: Good to fair."

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