July 7, 2023 /Environment/ — Sugilite is a relatively rare cyclosilicate mineral with a complex chemical formula of KNa₂(Fe, Mn, Al)₂Li₃Si₁₂O₃₀. It is typically found in shades of pink to purple, but can also be colorless, pale pink, or reddish violet. Sugilite crystals are rarely found and the form is usually massive. It has a hexagonal crystal system and a Mohs hardness of 6 to 6.5.

Sugilite is named after the Japanese petrologist Ken-ichi Sugi (1901-1948). It was first discovered in 1944 in the Iwagi island in the Ehime Prefecture, Japan. Since then, it has also been found in other countries, including South Africa, Russia, and the United States. Continue reading →