Violane

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Physical & Optical Properties

Mohs Hardness 5,0 – 6,0
Specific Gravity 3,22 – 3,4
Refractive Index 1,668 – 1,703
Crystal System Monoclinic
Luster Vitreous
Cleavage Distinct
Fracture Conchoidal
Color various
Birefringence 0,024

Mohs Hardness

Mohs Hardness: 5,0 – 6,0
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 Violane

Violane is a rare violet to blue-purple variety of diopside (calcium magnesium silicate) whose unusual color is caused by manganese substitution, found in only a few localities including Val d'Aosta and Piedmont in Italy, and Saint Marcel in the Western Alps. First described in 1876, it occurs in manganese-rich metamorphic skarns and is fashioned into cabochons and small carvings. Its distinctive violet-blue color, unique among pyroxene minerals, makes it highly sought by collectors.

Jewelry Use

Durability 4/10

Science FYI Family

Frequently Asked Questions

What is Violane?
Violane is a rare violet to blue-purple variety of diopside (calcium magnesium silicate) whose unusual color is caused by manganese substitution, found in only a few localities including Val d'Aosta and Piedmont in Italy, and Saint Marcel in the Western Alps. First described in 1876, it occurs in ma
What is the hardness of Violane?
Violane has a Mohs hardness of 5.0 to 6.0, making it moderate for use in jewelry.
What color is Violane?
Violane is primarily Various.
How much does Violane cost?
Violane falls into the Budget (< $50/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Violane?
Violane belongs to the Monoclinic crystal system.

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