Four Treasures Reference Database
Record No. 311
Gemological Digests: Sapphires cause new mining boom
Journal Article
Anonymous (1970) Gemological Digests: Sapphires cause new mining boom. Gems & Gemology, Vol. 13, No. 5, Spring, pp. 166–169.
ISBN/ISSN: 0016626X | Sinkankas/Born No.: NIS/NIB | RWHL
corundum, Australia.12, gems