mineral
Sugilite in Quartz
KNa2(Fe,Mn,Al)2Li3Si12O30
AI-generated identification · may be incorrectHardness of 6 to 6.5 on the Mohs scale, pink to purple color with white quartz matrix, vitreous to waxy luster, and hexagonal crystal system.
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Physical properties
Hardness of 6 to 6.5 on the Mohs scale, pink to purple color with white quartz matrix, vitreous to waxy luster, and hexagonal crystal system.
Formation & geological history
Formed through metasomatic processes in manganese-rich igneous and metamorphic environments, often associated with alkalic plutons.
Uses & applications
Used primarily as a rare gemstone in high-end cabochons, jewelry, and by mineral collectors.
Geological facts
Sugilite was first discovered in 1944 in Japan by Japanese petrologist Ken-ichi Sugi, but gem-quality purple material was later found in South Africa.
Field identification & locations
Identify by its distinctive magenta or purple patches embedded within a pale quartz host. Common localities include South Africa, Japan, and India.
