Tinzenite

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Physical & Optical Properties

Mohs Hardness 6,5
Specific Gravity 3,355 – 3,433
Refractive Index 1,69 – 1,705
Crystal System Triclinic
Cleavage Good,Poor
Fracture Uneven,Conchoidal
Color various
Pleochroism In thick sections, weak: light brown - violet - light yellow or colorless

Mohs Hardness

1 Talc 2 Gypsum 3 Calcite 4 Fluorite 5 Apatite 6 Orthoclase 7 Quartz 8 Topaz 9 Corundum 10 Diamond Tinzenite
Mohs hardness of Tinzenite shown against the ten reference minerals, from talc (1) to diamond (10).
Mohs Reference mineral Tinzenite
1 Talc
2 Gypsum
3 Calcite
4 Fluorite
5 Apatite
6 Orthoclase
7 Quartz
8 Topaz
9 Corundum
10 Diamond

Crystal System

a b c Triclinic a ≠ b ≠ c, α ≠ β ≠ γ ≠ 90°

Value & Market

Price Tier Moderate ($50-500/ct)

About Tinzenite

Tinzenite is a rare calcium manganese aluminum borosilicate axinite mineral that forms yellow to yellowish-orange to greenish crystals with a vitreous to resinous luster in manganese-rich metamorphic skarns. First described from the Tinzen Valley in Graubünden, Switzerland, it is named for its type locality and is also found in Japan and Italy. Its warm yellow-orange hues and crystal form make it an attractive, if rare, collector specimen.

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Frequently Asked Questions

What is Tinzenite?
Tinzenite is a rare calcium manganese aluminum borosilicate axinite mineral that forms yellow to yellowish-orange to greenish crystals with a vitreous to resinous luster in manganese-rich metamorphic skarns. First described from the Tinzen Valley in Graubünden, Switzerland, it is named for its type
What is the hardness of Tinzenite?
Tinzenite has a Mohs hardness of 6.5, making it moderate for use in jewelry.
What color is Tinzenite?
Tinzenite is primarily Various.
How much does Tinzenite cost?
Tinzenite falls into the Moderate ($50-500/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Tinzenite?
Tinzenite belongs to the Triclinic crystal system.

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