Almandine

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Physical & Optical Properties

Mohs Hardness 7.0 – 7.5
Specific Gravity 3.95 – 4.3
Refractive Index 1.77 – 1.82
Crystal System Isometric
Luster Vitreous
Cleavage Indistinct
Fracture Conchoidal
Color various
Dispersion 0.027
Pleochroism Absent

Mohs Hardness

Mohs Hardness: 7.0 – 7.5
1 Soft10 Hard

Crystal System

Value & Market

Price Tier Moderate ($50-500/ct)

Cultural Significance

Birthstone Month 1 (traditional)

About Almandine

Almandine is the most common and widespread garnet species, displaying deep red to reddish-brown colors caused by iron and aluminum in its crystal structure. It forms in metamorphic rocks such as schists and gneisses, with notable gem sources in India, Sri Lanka, Brazil, and the United States. Its deep, velvety red has made it one of the most popular and affordable red gemstones throughout history, often used as a substitute for more expensive rubies.

Jewelry Use

Durability 7/10

Suitable for daily wear

Science FYI Family

Frequently Asked Questions

What is Almandine?
Almandine is the most common and widespread garnet species, displaying deep red to reddish-brown colors caused by iron and aluminum in its crystal structure. It forms in metamorphic rocks such as schists and gneisses, with notable gem sources in India, Sri Lanka, Brazil, and the United States. Its d
What is the hardness of Almandine?
Almandine has a Mohs hardness of 7.0 to 7.5, making it excellent for use in jewelry.
What color is Almandine?
Almandine is primarily Various.
How much does Almandine cost?
Almandine falls into the Moderate ($50-500/ct) price range. Prices vary based on color, clarity, cut, and origin.
Is Almandine a birthstone?
Yes, Almandine is the January birthstone (traditional).

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