Precious Gemstones

Emerald

Current Market Range

$1,500+

Cherished since ancient Egypt and by Cleopatra.

Colombia, Zambia, Brazil, Zimbabwe, Ethiopia

Green to bluish - green

Chemical Formula

SiO₂ (Silicon Dioxide)

Hardness

7.5

Luster

Vitreous (Glassy)

Crystal System

Trigonal (Rhombohedral)

Refractive Index

1.57

Specific Gravity

2.67

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.