Chrome-Chalcedony

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Physical & Optical Properties

Mohs Hardness 6.5 – 7.0
Specific Gravity 2.55 – 2.7
Refractive Index 1.53 – 1.543
Crystal System Trigonal
Luster Waxy,Resinous
Color various
Birefringence 0.003

Mohs Hardness

Mohs Hardness: 6.5 – 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 Chrome-Chalcedony

Chrome chalcedony is a rare, intense apple-green to dark green variety of chalcedony colored by chromium rather than the nickel that gives common green chalcedony its color. It is found primarily in Zimbabwe (marketed as 'mtorolite'), where it occurs in chrome-bearing serpentinite, as well as in Australia and Kazakhstan. Its vivid, saturated green color distinguishes it from other green chalcedonies and makes it a desirable cabochon material.

Jewelry Use

Durability 6/10

Science FYI Family

Frequently Asked Questions

What is Chrome-Chalcedony?
Chrome chalcedony is a rare, intense apple-green to dark green variety of chalcedony colored by chromium rather than the nickel that gives common green chalcedony its color. It is found primarily in Zimbabwe (marketed as 'mtorolite'), where it occurs in chrome-bearing serpentinite, as well as in Aus
What is the hardness of Chrome-Chalcedony?
Chrome-Chalcedony has a Mohs hardness of 6.5 to 7.0, making it moderate for use in jewelry.
What color is Chrome-Chalcedony?
Chrome-Chalcedony is primarily Various.
How much does Chrome-Chalcedony cost?
Chrome-Chalcedony falls into the Moderate ($50-500/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Chrome-Chalcedony?
Chrome-Chalcedony belongs to the Trigonal crystal system.

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