Four Treasures Reference Database
Record No. 660
Gem Trade Lab Notes: Sapphires from Yogo Gulch, Montana
Journal Article
DelRe, N. (1994) Gem Trade Lab Notes: Sapphires from Yogo Gulch, Montana. Gems & Gemology, Vol. 30, No. 2, Summer, p. 120.
ISBN/ISSN: 0016626X | Sinkankas/Born No.: NIS / NIB | RWHL
corundum, Montana.12, USA.12, gems