Californite

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Physical & Optical Properties

Mohs Hardness 6,5
Specific Gravity 3,32 – 3,47
Refractive Index 1,7 – 1,725
Crystal System Tetragonal
Luster Vitreous,Resinous
Cleavage Perfect
Color various
Birefringence 0,001
Pleochroism Weak; present colour lighter and darker

Mohs Hardness

Mohs Hardness: 6,5
1 Soft10 Hard

Crystal System

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

Value & Market

Price Tier Moderate ($50-500/ct)

About Californite

Californite is a compact, translucent to opaque green variety of vesuvianite (idocrase) that closely resembles jade in appearance and is sometimes called 'California jade' or 'American jade.' Found in the Happy Camp area of Siskiyou County, California—its only significant source—it ranges from pale to deep green and is used for cabochons, carvings, and beads. Though not a true jade, its similar appearance, toughness, and attractive color make it a popular regional gem.

Jewelry Use

Durability 6/10

Science FYI Family

Frequently Asked Questions

What is Californite?
Californite is a compact, translucent to opaque green variety of vesuvianite (idocrase) that closely resembles jade in appearance and is sometimes called 'California jade' or 'American jade.' Found in the Happy Camp area of Siskiyou County, California—its only significant source—it ranges from pale
What is the hardness of Californite?
Californite has a Mohs hardness of 6.5, making it moderate for use in jewelry.
What color is Californite?
Californite is primarily Various.
How much does Californite cost?
Californite falls into the Moderate ($50-500/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Californite?
Californite belongs to the Tetragonal crystal system.

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