Hessonite

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Physical & Optical Properties

Mohs Hardness 7,0 – 7,5
Specific Gravity 3,55 – 3,73
Refractive Index 1,742 – 1,748
Crystal System Isometric
Fracture Uneven,Conchoidal
Color various

Mohs Hardness

Mohs Hardness: 7,0 – 7,5
1 Soft10 Hard

Crystal System

Value & Market

Price Tier Moderate ($50-500/ct)

About Hessonite

Hessonite is the cinnamon-brown to orange-brown variety of grossular garnet, colored by iron and manganese, with a characteristic "treacly" or swirling internal appearance caused by inclusions of diopside and apatite giving a heat-wave effect. It is one of the oldest known gemstones, prized in ancient Greek, Roman, and Indian traditions where it was called "gomeda" and associated with Vedic astrological properties. Fine hessonite is sourced primarily from Sri Lanka's gem gravels, Brazil, and Madagascar.

Jewelry Use

Durability 7/10

Suitable for daily wear

Science FYI Family

Frequently Asked Questions

What is Hessonite?
Hessonite is the cinnamon-brown to orange-brown variety of grossular garnet, colored by iron and manganese, with a characteristic "treacly" or swirling internal appearance caused by inclusions of diopside and apatite giving a heat-wave effect. It is one of the oldest known gemstones, prized in ancie
What is the hardness of Hessonite?
Hessonite has a Mohs hardness of 7.0 to 7.5, making it excellent for use in jewelry.
What color is Hessonite?
Hessonite is primarily Various.
How much does Hessonite cost?
Hessonite falls into the Moderate ($50-500/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Hessonite?
Hessonite belongs to the Isometric crystal system.

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