Viridine

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Physical & Optical Properties

Mohs Hardness 7.0 – 7.5
Specific Gravity 3.05 – 3.21
Refractive Index 1.629 – 1.66
Crystal System Orthorhombic
Luster Vitreous
Cleavage Distinct
Fracture Uneven
Color various
Birefringence 0.007
Dispersion 0.016

Mohs Hardness

Mohs Hardness: 7.0 – 7.5
1 Soft10 Hard

Crystal System

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

Value & Market

Price Tier Moderate ($50-500/ct)

About Viridine

Viridine is a rare green variety of andalusite, a manganese-bearing aluminum silicate, distinguished by an unusually rich green to brownish-green color caused by manganese replacing some aluminum in the crystal structure. Unlike common chiastolite andalusite, viridine occurs in specific manganese-rich metamorphic environments and is found in Sweden, Brazil, and Germany. Its unusual green color among andalusite varieties, combined with strong pleochroism, makes faceted viridine stones distinctive collector gems.

Jewelry Use

Durability 7/10

Suitable for daily wear

Science FYI Family

Frequently Asked Questions

What is Viridine?
Viridine is a rare green variety of andalusite, a manganese-bearing aluminum silicate, distinguished by an unusually rich green to brownish-green color caused by manganese replacing some aluminum in the crystal structure. Unlike common chiastolite andalusite, viridine occurs in specific manganese-ri
What is the hardness of Viridine?
Viridine has a Mohs hardness of 7.0 to 7.5, making it excellent for use in jewelry.
What color is Viridine?
Viridine is primarily Various.
How much does Viridine cost?
Viridine falls into the Moderate ($50-500/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Viridine?
Viridine belongs to the Orthorhombic crystal system.

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