Anatase

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Physical & Optical Properties

Mohs Hardness 5,5 – 6,0
Specific Gravity 3,82 – 3,97
Refractive Index 2,488 – 2,562
Crystal System Tetragonal
Fracture Sub-Conchoidal
Color various
Birefringence 0,073
Pleochroism Orange/brown stones - distinct: yellow - orange

Mohs Hardness

Mohs Hardness: 5,5 – 6,0
1 Soft10 Hard

Crystal System

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

Value & Market

Price Tier Budget (< $50/ct)

About Anatase

Anatase is a rare, high-luster titanium oxide mineral forming bipyramidal crystals in indigo-blue, brown, or pale yellow tones, valued as one of the most brilliantly refractive collector gems. It is a polymorph of rutile and brookite, and occurs mainly as microscopic crystals in metamorphic and hydrothermal deposits in Brazil, Switzerland, and Norway. Its extraordinary adamantine to metallic luster and high dispersion exceed even diamond, making large faceted anatase exceptional prizes.

Jewelry Use

Durability 4/10

Science FYI Family

Frequently Asked Questions

What is Anatase?
Anatase is a rare, high-luster titanium oxide mineral forming bipyramidal crystals in indigo-blue, brown, or pale yellow tones, valued as one of the most brilliantly refractive collector gems. It is a polymorph of rutile and brookite, and occurs mainly as microscopic crystals in metamorphic and hydr
What is the hardness of Anatase?
Anatase has a Mohs hardness of 5.5 to 6.0, making it moderate for use in jewelry.
What color is Anatase?
Anatase is primarily Various.
How much does Anatase cost?
Anatase falls into the Budget (< $50/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Anatase?
Anatase belongs to the Tetragonal crystal system.

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