Four Treasures Reference Database
Record No. 6451
Gem News: Treated Paraíba tourmalines
Journal Article
Koivula, J.I. and Kammerling, R.C. (1990) Gem News: Treated Paraíba tourmalines. Gems & Gemology, Vol. 26, No. 1, Spring, pp. 103–104.
ISBN/ISSN: 0016626X | Sinkankas/Born No.: NIS / NIB | RWHL
gems, tourmaline, cuprian tourmaline, tourmaline heat treatment, Paraíba tourmaline