mineral

Sugilite

KNa2(Fe,Mn,Al)2Li3Si12O30

Hardness: 5.5-6.5 on the Mohs scale, Color: Pinkish-purple, violet, magenta, or dark purple, Luster: Vitreous to waxy, Crystal System: Hexagonal, Cleavage: None distinct, Specific Gravity: 2.74-2.80

Hardness: 5

Identified August 5, 2026More mineral →

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Physical properties

Hardness: 5.5-6.5 on the Mohs scale, Color: Pinkish-purple, violet, magenta, or dark purple, Luster: Vitreous to waxy, Crystal System: Hexagonal, Cleavage: None distinct, Specific Gravity: 2.74-2.80

Formation & geological history

Forms in manganese-rich metamorphic and igneous environments, specifically in alkalic igneous rocks and contact zones, often associated with altered pegmatites.

Uses & applications

Used primarily as a gemstone for cabochons, beads, rings, and pendants, as well as a sought-after collector's mineral specimen.

Geological facts

Sugilite was first discovered in 1944 by Japanese petrologist Ken-ichi Sugi, after whom it is named. It is also known as luvulite or royal azel.

Field identification & locations

Easily recognized by its vibrant purple to magenta coloration and mottled matrix. It is found in locations such as Japan, South Africa, India, Canada, and Italy.