What is Chrysoprase?


Chrysoprase is a variety of chalcedony that is often found in Australia, Brazil, and Russia. It’s primarily used as a gemstone and is popular for its apple-green to deep-green color.

Chrysoprase is a unique gemstone that comes in shades of apple-green to deep-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 (Chalcedony)
ColorRanges from apple-green to deep green.
LusterWaxy to vitreous.
OccurrenceAustralia, Brazil, and Madagascar.
FormationTypically found in nickel-rich serpentine deposits.
Mohs Hardness6 to 7
Specific Gravity2.58 - 2.64
Diagnostic PropertiesBright green chalcedony.
Chemical CompositionSiO2
PleochroismNot observed in chrysoprase.
Crystal SystemHexagonal (variety of Quartz)
Optical PropertiesUniaxial (+)
Refractive Index1.530 - 1.539
2V angleMeasured: 58°
DispersionNot typically noted for its dispersion.