What is Hiddenite?


Hiddenite is a variety of spodumene that is often found in Brazil, Madagascar, and the United States. It’s primarily used as a gemstone and is popular for its green to yellow-green color.

Hiddenite is a unique gemstone that comes in shades of green to yellow-green. Its vibrant hue and unique appearance make it a popular choice for jewelry and decorative items, especially beads and pendants.

Gemstone Properties

Chemical ClassificationInorganic - Silicate (Spodumene)
ColorRanges from pale green to a deeper emerald-like green.
TransparencyTypically transparent to translucent.
OccurrenceUnited States (North Carolina), Brazil, and Madagascar.
FormationHiddenite forms in granite pegmatites.
Mohs Hardness6.5 - 7.
Specific GravityApproximately 3.15 - 3.21.
Diagnostic PropertiesGreen, a variety of spodumene.
Chemical CompositionLiAl(SiO3)2
PleochroismStrong; typically yellow-green and green.
Crystal SystemMonoclinic (variety of Spodumene)
Optical PropertiesBiaxial (-)
Refractive Index1.660 - 1.676
2V angleMeasured: 58°
DispersionNot typically noted due to its color and transparency.