What is Sugilite?


Sugilite is a relatively rare pink to purple cyclosilicate mineral. It’s primarily found in Japan, Canada, and South Africa. Sugilite is often used as a gemstone and is popular for its vibrant colors and its spiritual significance.

Sugilite is a vibrant gemstone that comes in shades of pink to purple. Its unique appearance and color make it a popular choice for jewelry and decorative items, especially beads and pendants.

Gemstone Properties

Chemical ClassificationInorganic - Silicate
ColorRanges from pinkish-purple to deep bluish-purple.
LusterVitreous to resinous.
TransparencyOpaque to translucent.
OccurrenceSouth Africa (especially the Wessels Mine in the Northern Cape), Japan, and Canada.
FormationFormed in manganese-rich metamorphic rocks.
DiaphaneityTranslucent to opaque
CleavagePerfect in two directions
Mohs Hardness5.5 - 6.5.
Specific GravityApproximately 2.74 - 2.80.
Diagnostic PropertiesPurple, often with black or brown matrix.
Chemical CompositionKNa2(Fe,Mn,Al)2Li3Si12O30
PleochroismNot observable due to its typical opacity.
Crystal SystemHexagonal
Optical PropertiesBiaxial (+)
Refractive Index1.607
2V angleMeasured: 58°
DispersionNot typically noted due to its opacity.