Four Treasures Reference Database
Record No. 4859
Gem News: Huge, doubly-terminated sapphire crystal
Journal Article
Koivula, J.I. and Kammerling, R.C. (1989) Gem News: Huge, doubly-terminated sapphire crystal. Gems & Gemology, Vol. 25, No. 4, Winter, p. 247.
ISBN/ISSN: 0016626X | Sinkankas/Born No.: NIS / NIB | RWHL
corundum, Sri Lanka.12, quality.10, gems