AGL Rules on Lead Glass Filled Rubies

[Guest guest]

Hello, There are some new standardisation with glass filled rubies. Perhaps the below extract might interest a few members here. ******** AGL Rules on Lead Glass Filled Rubies The AGL has established new rules for describing lead glass filled rubies. Effective immediately, AGL members will disclose this material as follows:. Identification: Composite Ruby Standard enhancement: Heat Additional enhancement: Lead-glass Comments: 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 Christopher P. Smith, vice president and chief gemologist of AGL, said, “We wanted to develop a new category for this material that would allow for easy reference and allude to their condition, then provide further information for clarification under the comments section of our documents.” "These stones are often so heavily treated that it is not always possible to determine how much of the stone is actually ruby and how much is glass.” He added that a recent study showed that the lead-glass was susceptible to many types of solvents, including standard household products. “Once the glass became etched, the apparent clarity of the stones was severely affected and it became readily evident how low quality the stones actually were." ******** Best, Jay

Be a better sports nut! Let your teams follow you with Mobile. Try it now.