Gemologist Guide To Identifying Benitoite
Benitoite was discovered in 1907 and became the state gem of California in 1985. Initially, the opinions about the gem’s identity ranged from Spinel to Volcanic Glass, and because of the particular blue color, Sapphire. However, the gemstone’s birefringence and dispersion values helped distinguish it from Sapphire. How to Identify Benitoite Through Testing There […]