Four Treasures Reference Database
Record No. 4863
Gem News: New World sapphires
Journal Article
Koivula, J.I. and Kammerling, R.C. (1990) Gem News: New World sapphires. Gems & Gemology, Vol. 26, No. 1, Spring, pp. 101–102.
ISBN/ISSN: 0016626X | Sinkankas/Born No.: NIS / NIB | RWHL
corundum, Montana.12, USA.12, Colombia.12, Brazil.12, Eldorado Bar, gems