History and Origin

Coral, cherished by Mediterranean cultures for its vibrant red and pink tones, symbolizes protection and vitality. It has been used in jewelry for centuries.

Mediterranean Sea, Japan, Taiwan

Mostly comes from

Currently priced at

$50 - $300

a Carat

Chemical Formula

Al₂O₃ (Aluminum Oxide with trace elements)

Hardness

on Mohs scale

Luster

Dull (Earthy)

Crystal System

Refractive Index

1.49

Specific Gravity

2.6

Color(s)

Red, pink, orange, white, black

Chemical Formula

Al₂O₃ (Aluminum Oxide with trace elements)

Hardness

Luster

Dull (Earthy)

Crystal System

Refractive Index

1.49

Specific Gravity

2.6

Help Guide

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.

Coral

History and Origin

Color(s)

Help Guide

View More

Gemstones

Diamond

Sapphire

Ruby

Emerald