Semi-Precious Gemstones

Zircon

Current Market Range

$50 - $400

Used since ancient times; often mistaken for diamonds.

Cambodia, Sri Lanka, Myanmar, Australia

Clear, blue, yellow, brown, green, red

Chemical Formula

(Ca₂Al₃(Si₃O₁₂)(OH)) (Calcium Aluminum Silicate)

Hardness

Luster

Adamantine

Crystal System

Tetragonal

Refractive Index

1.81

Specific Gravity

4.6

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.