Gedrite

Q: What is Gedrite?

Gedrite is a magnesium iron aluminosilicate member of the amphibole group, typically forming gray, greenish-gray, or brownish prismatic crystals in high-grade metamorphic rocks. It occurs in gneisses and granulites in localities including Scotland, Germany, Brazil, and the Czech Republic, usually as

Q: What is the hardness of Gedrite?

Gedrite has a Mohs hardness of 5.5 to 6.0, making it moderate for use in jewelry.

Q: How much does Gedrite cost?

Gedrite falls into the Budget (< $50/ct) price range. Prices vary based on color, clarity, cut, and origin.

Q: What is the crystal system of Gedrite?

Gedrite belongs to the Orthorhombic crystal system.

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Physical & Optical Properties

Category Semi-Precious Gems

Mohs Hardness 5.5 – 6.0

Specific Gravity 3.15 – 3.259

Refractive Index 1.625 – 1.718

Crystal System Orthorhombic

Cleavage Perfect,Imperfect

Color various

Pleochroism Weak to moderate, in browns, yellows, or gray.

Mohs Hardness

Mohs Hardness: 5.5 – 6.0

1 Soft10 Hard

Crystal System

Value & Market

Price Tier Budget (< $50/ct)

Where to Buy Gedrite

Blue Nile Fine jewelry retailer

James Allen Gemstone jewelry

Brilliant Earth Ethically sourced gems

Amazon Wide selection

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About Gedrite

Gedrite is a magnesium iron aluminosilicate member of the amphibole group, typically forming gray, greenish-gray, or brownish prismatic crystals in high-grade metamorphic rocks. It occurs in gneisses and granulites in localities including Scotland, Germany, Brazil, and the Czech Republic, usually as an aggregate rather than gem-quality crystals. Transparent faceted material is extremely rare, making it of interest chiefly to mineralogical collectors.