Axinite

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Physical & Optical Properties

Mohs Hardness 6.5 – 7.0
Specific Gravity 3.26 – 3.36
Refractive Index 1.656 – 1.704
Crystal System Triclinic
Luster Vitreous
Cleavage Good
Fracture Conchoidal
Color various
Birefringence 0.009
Dispersion 0.018
Pleochroism Orange/brown stones - strong trichroism: olive green - red brown to violet - yellow brown

Mohs Hardness

Mohs Hardness: 6.5 – 7.0
1 Soft10 Hard

Crystal System

a b c Triclinic a ≠ b ≠ c, α ≠ β ≠ γ ≠ 90°

Value & Market

Price Tier Moderate ($50-500/ct)

About Axinite

Axinite is a borosilicate mineral group known for producing unusually shaped, wedge-edged crystals in shades of clove-brown, violet, and gray-blue, with strongly pleochroic properties that shift through brown, violet, and olive depending on viewing angle. Fine gem-quality material comes from France's Bourg d'Oisans region, Tanzania, and Mexico, where deeply colored transparent crystals reward skilled lapidaries. Its distinctive sharp-edged crystal habit and rich color make axinite a standout collector gem.

Jewelry Use

Durability 6/10

Science FYI Family

Frequently Asked Questions

What is Axinite?
Axinite is a borosilicate mineral group known for producing unusually shaped, wedge-edged crystals in shades of clove-brown, violet, and gray-blue, with strongly pleochroic properties that shift through brown, violet, and olive depending on viewing angle. Fine gem-quality material comes from France'
What is the hardness of Axinite?
Axinite has a Mohs hardness of 6.5 to 7.0, making it moderate for use in jewelry.
What color is Axinite?
Axinite is primarily Various.
How much does Axinite cost?
Axinite falls into the Moderate ($50-500/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Axinite?
Axinite belongs to the Triclinic crystal system.

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