Sapphirine

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

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

On this page

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.

More Semi-Precious Gems Gems