Four Treasures Reference Database
Record No. 5394
Gem News: Montana sapphire heat treatment
Journal Article
Koivula, J.I. and Kammerling, R.C. (1991) Gem News: Montana sapphire heat treatment. Gems & Gemology, Vol. 27, No. 3, Fall, p. 186.
ISBN/ISSN: 0016626X | Sinkankas/Born No.: NIS / NIB | RWHL
corundum, treatments.6, Montana.12, gems