Hambergite

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Physical & Optical Properties

Category Organic Gems
Mohs Hardness 7.5
Specific Gravity 2.33 – 2.37
Refractive Index 1.543 – 1.631
Crystal System Orthorhombic
Luster Vitreous
Fracture Conchoidal
Color various
Birefringence 0.071
Dispersion 0.015
Pleochroism Nil

Mohs Hardness

Mohs Hardness: 7.5
1 Soft10 Hard

Crystal System

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

Value & Market

Price Tier Moderate ($50-500/ct)

Where to Buy Hambergite

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About Hambergite

Hambergite is a rare beryllium borate mineral, typically forming colorless to white orthorhombic crystals with a vitreous luster and an unusually high birefringence that causes noticeable doubling of facet reflections. It was first described from the Toscan district of Norway in 1890 and named for Swedish mineralogist Axel Hamberg, with gem-quality material found in pegmatites in Madagascar and Afghanistan. Faceted hambergite is treasured by collectors for its extreme birefringence and exceptional clarity.

Jewelry Use

Durability 8/10

Suitable for daily wear

Science FYI Family

Frequently Asked Questions

What is Hambergite?
Hambergite is a rare beryllium borate mineral, typically forming colorless to white orthorhombic crystals with a vitreous luster and an unusually high birefringence that causes noticeable doubling of facet reflections. It was first described from the Toscan district of Norway in 1890 and named for S
What is the hardness of Hambergite?
Hambergite has a Mohs hardness of 7.5, making it excellent for use in jewelry.
What color is Hambergite?
Hambergite is primarily Various.
How much does Hambergite cost?
Hambergite falls into the Moderate ($50-500/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Hambergite?
Hambergite belongs to the Orthorhombic crystal system.

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