Painite

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Physical & Optical Properties

Mohs Hardness 7.5 – 8.0
Specific Gravity 4.0 – 4.03
Refractive Index 1.787 – 1.816
Crystal System Hexagonal
Luster Vitreous
Fracture Conchoidal
Color various
Birefringence 0.029

Mohs Hardness

Mohs Hardness: 7.5 – 8.0
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 Painite

Painite is a calcium zirconium aluminum borate mineral once considered the world's rarest mineral and gem, with only two known crystals until 2005 and fewer than a thousand specimens known today. First described in 1957 from Myanmar and named after gemologist Arthur Pain, it occurs as deep brownish-red to orange-red hexagonal crystals with adamantine luster. Faceted painite remains extraordinarily rare and commands exceptional prices; fine specimens are held in major natural history museum collections worldwide.

Jewelry Use

Durability 8/10

Suitable for daily wear

Science FYI Family

Frequently Asked Questions

What is Painite?
Painite is a calcium zirconium aluminum borate mineral once considered the world's rarest mineral and gem, with only two known crystals until 2005 and fewer than a thousand specimens known today. First described in 1957 from Myanmar and named after gemologist Arthur Pain, it occurs as deep brownish-
What is the hardness of Painite?
Painite has a Mohs hardness of 7.5 to 8.0, making it excellent for use in jewelry.
What color is Painite?
Painite is primarily Various.
How much does Painite cost?
Painite falls into the Moderate ($50-500/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Painite?
Painite belongs to the Hexagonal crystal system.

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