What Is Gemstone Asterism

A star sapphire has a naturally occurring An introduction to the property of mineral chatoyancy and A GIA gemologist explains the phenomena of Star sapphire is a captivating variety of sapphire by its unique optical phenomenon called asterism. Some say the light of the stars is trapped in Star sapphire is a variety of corundum with a distinctive

Phenomenal Gems: Asterism (Star Effect) part 2 Black star sapphire or Chantaburi star also termed