Four Treasures Reference Database
Record No. 626
Developments and Highlights at the Gem Trade Lab in New York: Unusual 10–carat Montana sapphire
Journal Article
Crowningshield, G.R. (1965) Developments and Highlights at the Gem Trade Lab in New York: Unusual 10–carat Montana sapphire. Gems & Gemology, Vol. 11, No. 11, Fall, pp. 331–332.
ISBN/ISSN: 0016626X | Sinkankas/Born No.: NIS/NIB | RWHL
corundum, Montana.12, USA.12, gems
Lab notes - NY. Note on 10 ct. stone (with photograph). Probably not Yogo (as it has rutile silk)