Glass-Imitation-of-Tanzanie
GLASS IMITATION OF TANZANITE By Tay Thye Sun & Loke Hui Ying (Published in the Journal of Gemmology, 32(2) 2014, pg 109-110) Figure. 31. These attractive purplish blue gems proved…
Diffusion-induced
DIFFUSION-INDUCED BLUE COLOUR AND ASTERISM SAPPHIRE By Tay Thye Sun and Loke Hui Ying (Published in the Journal of Gemmology, 34(7), 2015, pg 576 – 577) In April 2015, a…
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