AGL modifies heated-ruby disclosure wording
New York–American Gemological Laboratories (AGL) is modifying the disclosure terminology it uses for treated rubies by exchanging the term “inorganic (fluxtype)” with “heating residues” in its descriptions of heat-treated rubies, the lab announced.
In a statement issued on Wednesday, the lab also said it would be including the statement “Heating residues are deposited along healed fractures during the heating process” as an additional description under the comments section of all grading reports for rubies.
The way in which the healing of fissures during the heating process of rubies has been handled has been a contentious topic for more than a decade.
