Epidote

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Physical & Optical Properties

Mohs Hardness 6,0 – 7,0
Specific Gravity 3,25 – 3,5
Refractive Index 1,729 – 1,768
Crystal System Monoclinic
Luster Vitreous
Cleavage Perfect
Fracture Conchoidal,Splintery
Color various
Birefringence 0,014
Dispersion 0,03
Pleochroism Orange/brown stones - strong trichroism: green to strong green - light brown to brown - yellow to colorless; Green stones - strong: green - brown - yellow to colorless

Mohs Hardness

Mohs Hardness: 6,0 – 7,0
1 Soft10 Hard

Crystal System

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

Value & Market

Price Tier Moderate ($50-500/ct)

About Epidote

Epidote is a calcium aluminum iron sorosilicate mineral famous for its distinctive pistachio-green to yellowish-green color, caused by iron, and its strongly pleochroic crystals that shift through olive green, brownish yellow, and greenish yellow from different angles. Found in metamorphic rocks, skarns, and hydrothermal veins worldwide, fine transparent faceted epidote from Pakistan, Mexico, and Mozambique displays an unusual bicolor that challenges skilled lapidaries. Massive green epidote within quartz or feldspar matrix is carved as decorative stone.

Jewelry Use

Durability 5/10

Science FYI Family

Frequently Asked Questions

What is Epidote?
Epidote is a calcium aluminum iron sorosilicate mineral famous for its distinctive pistachio-green to yellowish-green color, caused by iron, and its strongly pleochroic crystals that shift through olive green, brownish yellow, and greenish yellow from different angles. Found in metamorphic rocks, sk
What is the hardness of Epidote?
Epidote has a Mohs hardness of 6.0 to 7.0, making it moderate for use in jewelry.
What color is Epidote?
Epidote is primarily Various.
How much does Epidote cost?
Epidote falls into the Moderate ($50-500/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Epidote?
Epidote belongs to the Monoclinic crystal system.

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