Petalite

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Physical & Optical Properties

Mohs Hardness 6,0 – 6,5
Specific Gravity 2,4
Refractive Index 1,502 – 1,523
Crystal System Monoclinic
Luster Pearly
Cleavage Glass
Fracture Conchoidal
Color various
Birefringence 0,012
Dispersion 0,0141
Pleochroism Absent

Mohs Hardness

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

Crystal System

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

Value & Market

Price Tier Moderate ($50-500/ct)

About Petalite

La petalita es un tecto-silicato de litio y aluminio que forma masas clivadas o cristales tabulares de color incoloro, blanco o gris con lustre vítreo, siendo la primera fuente natural de litio identificada por el químico Johan August Arfwedson en 1817. Se halla en pegmatitas graníticas de Namibia, Brasil y Suecia, y el material transparente es ocasionalmente facetado para coleccionistas. Es también una fuente menor de litio para la industria de las baterías y la cerámica especial.

Jewelry Use

Durability 5/10

Science FYI Family

Frequently Asked Questions

What is Petalite?
La petalita es un tecto-silicato de litio y aluminio que forma masas clivadas o cristales tabulares de color incoloro, blanco o gris con lustre vítreo, siendo la primera fuente natural de litio identificada por el químico Johan August Arfwedson en 1817. Se halla en pegmatitas graníticas de Namibia,
What is the hardness of Petalite?
Petalite has a Mohs hardness of 6.0 to 6.5, making it moderate for use in jewelry.
What color is Petalite?
Petalite is primarily Various.
How much does Petalite cost?
Petalite falls into the Moderate ($50-500/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Petalite?
Petalite belongs to the Monoclinic crystal system.

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