Four Treasures Reference Database
Record No. 638
Gem Trade Lab Notes: Sapphire, durability of heat-treated stones
Journal Article
Crowningshield, G.R. (1992) Gem Trade Lab Notes: Sapphire, durability of heat-treated stones. Gems & Gemology, Vol. 28, No. 2, Summer, pp. 127–128.
ISBN/ISSN: 0016626X | Sinkankas/Born No.: NIS / NIB | RWHL
corundum, treatments.6, sapphire, gems