Sogdianite

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Physical & Optical Properties

Mohs Hardness 7.0
Specific Gravity 2.77 – 2.9
Refractive Index 1.606 – 1.608
Crystal System Hexagonal
Luster Vitreous
Cleavage Perfect
Color various
Birefringence 0.002

Mohs Hardness

Mohs Hardness: 7.0
1 Soft10 Hard

Crystal System

a a c Hexagonal a = b ≠ c, α = β = 90°, γ = 120°

Value & Market

Price Tier Moderate ($50-500/ct)

About Sogdianite

Sogdianite is an extremely rare lithium zirconium silicate mineral with a striking violet to purple color and vitreous luster, found in only a single primary locality — the Dara-i-Pioz alkaline complex in Tajikistan. First described in 1968 and named after the ancient Sogdiana region of Central Asia, faceted stones are among the rarest in the world, with only a handful known to exist. Its deep purple hue and extraordinary scarcity make it an ultimate trophy gem.

Jewelry Use

Durability 7/10

Suitable for daily wear

Science FYI Family

Frequently Asked Questions

What is Sogdianite?
Sogdianite is an extremely rare lithium zirconium silicate mineral with a striking violet to purple color and vitreous luster, found in only a single primary locality — the Dara-i-Pioz alkaline complex in Tajikistan. First described in 1968 and named after the ancient Sogdiana region of Central Asia
What is the hardness of Sogdianite?
Sogdianite has a Mohs hardness of 7.0, making it excellent for use in jewelry.
What color is Sogdianite?
Sogdianite is primarily Various.
How much does Sogdianite cost?
Sogdianite falls into the Moderate ($50-500/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Sogdianite?
Sogdianite belongs to the Hexagonal crystal system.

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