Four Treasures Reference Database
Record No. 5146
Gem News: Sapphire mining in Laos
Journal Article
Kammerling, Robert C., Koivula, John I. and Johnson, Mary L. (1995) Gem News: Sapphire mining in Laos. Gems & Gemology, Vol. 31, No. 4, Winter, pp. 282–283.
ISBN/ISSN: 0016626X | Sinkankas/Born No.: NIS / NIB | RWHL
corundum, Laos.12, gems