Ulexite

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Physical & Optical Properties

Category Collector Gems
Mohs Hardness 2,0 – 2,5
Specific Gravity 1,65 – 1,99
Refractive Index 1,491 – 1,52
Crystal System Monoclinic
Luster Silky
Cleavage Perfect
Fracture Uneven
Color various
Birefringence 0,029
Pleochroism Absent

Mohs Hardness

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

Crystal System

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

Value & Market

Price Tier Budget (< $50/ct)

Where to Buy Ulexite

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About Ulexite

A ulexite é um mineral hidratado de borato de sódio e cálcio que forma delicadas massas fibrosas brancas e sedosas em leitos lacustres secos e depósitos evaporíticos. As fibras opticas paralelas que constituem os seus cristais transmitem imagens da superfície inferior para a superior, o que lhe valeu o apelido de "televisão de pedra" ou "pedra TV". Ocorre principalmente na Califórnia e no Nevada (EUA) e no Chile, sendo apreciada como curiosidade mineral.

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Frequently Asked Questions

What is Ulexite?
A ulexite é um mineral hidratado de borato de sódio e cálcio que forma delicadas massas fibrosas brancas e sedosas em leitos lacustres secos e depósitos evaporíticos. As fibras opticas paralelas que constituem os seus cristais transmitem imagens da superfície inferior para a superior, o que lhe vale
What is the hardness of Ulexite?
Ulexite has a Mohs hardness of 2.0 to 2.5, making it relatively soft for use in jewelry.
What color is Ulexite?
Ulexite is primarily Various.
How much does Ulexite cost?
Ulexite falls into the Budget (< $50/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Ulexite?
Ulexite belongs to the Monoclinic crystal system.