Dolomite

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Physical & Optical Properties

Mohs Hardness 3,5 – 4,0
Specific Gravity 2,8 – 2,95
Refractive Index 1,498 – 1,681
Crystal System Trigonal
Luster Vitreous,Pearly
Cleavage Perfect
Fracture Sub-Conchoidal
Color various
Birefringence 0,179
Pleochroism Nil

Mohs Hardness

Mohs Hardness: 3,5 – 4,0
1 Soft10 Hard

Crystal System

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

Value & Market

Price Tier Budget (< $50/ct)

About Dolomite

Dolomite is a calcium magnesium carbonate mineral and major rock-forming mineral in dolomite rock (dolostone), typically forming white to gray rhombohedral crystals with a pearly luster in sedimentary sequences and hydrothermal veins. Curved, saddle-shaped 'baroque' crystals in pink to white and colorless transparent varieties are occasionally faceted as delicate collector gems. Fine pink crystals from Eugui, Spain, and beautiful curved pink crystals from mining regions in Mexico are collector favorites.

Jewelry Use

Durability 2/10

Science FYI Family

Frequently Asked Questions

What is Dolomite?
Dolomite is a calcium magnesium carbonate mineral and major rock-forming mineral in dolomite rock (dolostone), typically forming white to gray rhombohedral crystals with a pearly luster in sedimentary sequences and hydrothermal veins. Curved, saddle-shaped 'baroque' crystals in pink to white and col
What is the hardness of Dolomite?
Dolomite has a Mohs hardness of 3.5 to 4.0, making it relatively soft for use in jewelry.
What color is Dolomite?
Dolomite is primarily Various.
How much does Dolomite cost?
Dolomite falls into the Budget (< $50/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Dolomite?
Dolomite belongs to the Trigonal crystal system.

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