23. Oct IGC 2023 Colour change Paraiba tourmaline from Brazil By Claudio C. Milisenda, Stefan Müller Download Pdf Tourmaline
23. Oct IGC 2023 Opal stability: a step toward detection Opal is a gem of captivating beauty that stems from its complex microscopic structure composed mainl Read More Elodie
23. Oct IGC 2023 Investigating the Provenance signature of Tourmaline-Bearing Turquoise in the Kuh Zar Gold Deposit, Semnan Province, Iran The Neyshabur reserve in northeast Iran is renowned for its production of Persian turquoise, yet it Read More Elodie
23. Oct IGC 2023 A Review and Synthesis of the Geology and Gem Resources of Granitic Pegmatites in Southern California, USA Gem-bearing pegmatites in Southern California are hosted by the Peninsular Ranges batholith, and occ Read More Elodie
