Antigorite

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Physical & Optical Properties

Mohs Hardness 5,0 – 5,5
Specific Gravity 2,58 – 2,8
Refractive Index 1,53 – 1,575
Crystal System Monoclinic
Luster Waxy,Silky,Resinous,Greasy,Dull (Earthy)
Cleavage Perfect
Fracture Conchoidal,Splintery
Color various

Mohs Hardness

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

Crystal System

β a b c Monoclinic a ≠ b ≠ c, α = γ = 90°, β ≠ 90°

Value & Market

Price Tier Budget (< $50/ct)

About Antigorite

Antigorite is a platy, layered variety of serpentine mineral typically appearing in dark green to blackish green massive form in metamorphic ultramafic rocks. It forms as a result of the hydrothermal alteration of olivine and pyroxene minerals at depth. Polished antigorite slabs reveal attractive green mottling and are used as decorative stone, and it sometimes occurs within the green mineral mix sold commercially as serpentine or verde antique.

Jewelry Use

Durability 4/10

Science FYI Family

Frequently Asked Questions

What is Antigorite?
Antigorite is a platy, layered variety of serpentine mineral typically appearing in dark green to blackish green massive form in metamorphic ultramafic rocks. It forms as a result of the hydrothermal alteration of olivine and pyroxene minerals at depth. Polished antigorite slabs reveal attractive gr
What is the hardness of Antigorite?
Antigorite has a Mohs hardness of 5.0 to 5.5, making it moderate for use in jewelry.
What color is Antigorite?
Antigorite is primarily Various.
How much does Antigorite cost?
Antigorite falls into the Budget (< $50/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Antigorite?
Antigorite belongs to the Monoclinic crystal system.

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