A Pink Sapphire with Questionable Heat Treatment
Abstract
A pink sapphire weighing over 20 ct was recently submitted to Guild Gem Laboratories, and it presented a particularly challenging case for the determination of heat treatment. According to the client, the stone had previously received four reports from three different laboratories
Citation
Gao Yujie, Huang T.T, Andrew Christopher Lucas. (2025) A Pink Sapphire with Questionable Heat Treatment. The Journal of Gemmology, Vol. 39, No. 8, pp. 736-738.