Four Treasures Reference Database
Record No. 5381
Gem News: Diffusion-treated sapphire cabochons sold as natural
Journal Article
Koivula, J.I., Kammerling, R.C. and Fritsch, E. (1992) Gem News: Diffusion-treated sapphire cabochons sold as natural. Gems & Gemology, Vol. 28, No. 3, Fall, pp. 204–205.
ISBN/ISSN: 0016626X | Sinkankas/Born No.: NIS / NIB | RWHL
corundum, treatments.6, diffusion-treated, gems