Prase

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Physical & Optical Properties

Mohs Hardness 7,0
Specific Gravity 2,64 – 2,69
Refractive Index 1,544 – 1,553
Crystal System Trigonal
Luster Vitreous
Cleavage None
Fracture Conchoidal
Color various
Birefringence 0,009

Mohs Hardness

Mohs Hardness: 7,0
1 Soft10 Hard

Crystal System

a a a Trigonal (Rhombohedral) a = b = c, α = β = γ ≠ 90°

Value & Market

Price Tier Moderate ($50-500/ct)

About Prase

Prase is a leek-green variety of quartz whose color is imparted by inclusions of actinolite or chlorite fibers distributed throughout the stone. Known since antiquity, it was used in ancient Greece and Rome for carving intaglios and decorative objects, and is found in Greece, Finland, and South Africa. Its opaque to translucent nature and earthy green hue give it a distinctive character among quartz varieties.

Jewelry Use

Durability 7/10

Suitable for daily wear

Science FYI Family

Frequently Asked Questions

What is Prase?
Prase is a leek-green variety of quartz whose color is imparted by inclusions of actinolite or chlorite fibers distributed throughout the stone. Known since antiquity, it was used in ancient Greece and Rome for carving intaglios and decorative objects, and is found in Greece, Finland, and South Afri
What is the hardness of Prase?
Prase has a Mohs hardness of 7.0, making it excellent for use in jewelry.
What color is Prase?
Prase is primarily Various.
How much does Prase cost?
Prase falls into the Moderate ($50-500/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Prase?
Prase belongs to the Trigonal crystal system.

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