mineral
Sugilite
KNa2(Fe,Mn,Al)2Li3Si12O30
AI-generated identification · may be incorrectHardness of 5.5 to 6.5 on the Mohs scale, vibrant purple to magenta color, vitreous to waxy luster, and hexagonal crystal system.
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Physical properties
Hardness of 5.5 to 6.5 on the Mohs scale, vibrant purple to magenta color, vitreous to waxy luster, and hexagonal crystal system.
Formation & geological history
Forms in manganese-rich metamorphic and igneous rocks, typically found in alkaline pegmatites and hydrothermal veins.
Uses & applications
Primarily used as a gemstone in high-end jewelry and as a sought-after collector mineral.
Geological facts
Also known as luvulite, sugilite was first discovered in 1944 by Japanese petrologist Ken-ichi Sugi.
Field identification & locations
Identified by its rich purple coloration and often mottled appearance with black or reddish inclusions; primarily sourced from South Africa and Japan.
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Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Limonite
FeO(OH)•nH2O
mineral
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Tumbled granite
Granite, a coarse-grained felsic intrusive igneous rock
igneous
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic