Semi-Precious Gemstones

Peridot

Current Market Range

$50 - $500

Known as the 'gem of the sun'; used in ancient Egypt.

Pakistan, Myanmar, China, USA (Arizona), Egypt

Yellowish - green to olive green

Chemical Formula

CaCO₃ (Calcium Carbonate, in aragonite form)

Hardness

6.5

Luster

Vitreous (Glassy)

Crystal System

Orthorhombic

Refractive Index

1.65

Specific Gravity

3.32

Crystal System

Gemstones and minerals are classified into seven primary crystal systems based on their atomic structure.

Refractive Index

The refractive index (RI) of a material measure how much light is bent, or refracted, when entering the material from another medium.

Specific Gravity

The specific gravity (SG) of a substance is a measure of its density compared to water.

Chemical Formula

A chemical formula shows the types and quantities of atoms in a molecule.