mineral
Sugilite
Sugilite (KNa2(Fe,Mn,Al)2Li3Si12O30)
AI-generated identification · may be incorrectHardness: 5.5 - 6.5 on the Mohs scale, Color: Magenta, purple, reddish-purple, brownish-yellow, Luster: Vitreous to waxy, Crystal Structure: Hexagonal, Cleavage: Poor, Specific Gravity: 2.74 - 2.80
- Hardness
- 5
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Physical properties
Hardness: 5.5 - 6.5 on the Mohs scale, Color: Magenta, purple, reddish-purple, brownish-yellow, Luster: Vitreous to waxy, Crystal Structure: Hexagonal, Cleavage: Poor, Specific Gravity: 2.74 - 2.80
Formation & geological history
Formed in manganese-rich metamorphic environments and alkaline igneous rocks like syenites and pegmatites.
Uses & applications
Used primarily as an ornamental stone, carved into beads, cabochons, and jewelry, and collected as a rare mineral specimen.
Geological facts
Sugilite was first discovered in 1944 by Japanese petrologist Ken-ichi Sugi, after whom it was named. Gem-quality sugilite is quite rare and often prized for its vibrant purple color.
Field identification & locations
Identified by its distinctive rich purple or magenta color, often mottled with darker or lighter patches and white inclusions. Commonly found in South Africa, Japan, India, and Canada.
