Four Treasures Reference Database
Record No. 4858
Gem News: Large bicolored sapphire
Journal Article
Koivula, J.I. and Kammerling, R.C. (1989) Gem News: Large bicolored sapphire. Gems & Gemology, Vol. 25, No. 3, Fall, p. 181.
ISBN/ISSN: 0016626X | Sinkankas/Born No.: NIS / NIB | RWHL
corundum, quality.10, Australia.12, gems