Sapphirine

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Physical & Optical Properties

Mohs Hardness 7.5
Specific Gravity 3.4 – 3.58
Refractive Index 1.701 – 1.724
Crystal System Monoclinic
Luster Vitreous
Cleavage None
Fracture Conchoidal
Color various
Birefringence 0.005
Dispersion 0.019

Mohs Hardness

Mohs Hardness: 7.5
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 Sapphirine

Sapphirine is a rare magnesium-aluminum silicate mineral displaying vivid sapphire-blue to pale lavender hues, whose intense color can rival the finest blue sapphires despite the stone's rarity in gem-quality form. It forms in highly magnesian, aluminum-rich metamorphic rocks and has been found in gem-quality material in Madagascar, Sri Lanka, Myanmar, and Greenland. Its deep saturated blue and extreme rarity make it a prized trophy for serious gem collectors.

Jewelry Use

Durability 8/10

Suitable for daily wear

Science FYI Family

Frequently Asked Questions

What is Sapphirine?
Sapphirine is a rare magnesium-aluminum silicate mineral displaying vivid sapphire-blue to pale lavender hues, whose intense color can rival the finest blue sapphires despite the stone's rarity in gem-quality form. It forms in highly magnesian, aluminum-rich metamorphic rocks and has been found in g
What is the hardness of Sapphirine?
Sapphirine has a Mohs hardness of 7.5, making it excellent for use in jewelry.
What color is Sapphirine?
Sapphirine is primarily Various.
How much does Sapphirine cost?
Sapphirine falls into the Moderate ($50-500/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Sapphirine?
Sapphirine belongs to the Monoclinic crystal system.

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