Carnelian and Andesine Physical Properties

Carnelian

Andesine

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.58-2.64

2.65-2.69

1.5 Fracture

Uneven, Splintery, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)

Uneven, Uneven, Conchoidal, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

Absent

Perfect on {001}, good on {010}

1.7 Mohs Hardness

6.5-7

6-6.5

1.8 Chemical Composition

SiO₂

(Na,Ca)Al_1-2Si_3-2O₈

Carnelian and Andesine Chemical Formula

While comparing Carnelian and Andesine physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Carnelian and Andesine chemical formula.

Chemical formula of Carnelian- SiO₂
Chemical formula of Andesine- (Na,Ca)Al_1-2Si_3-2O₈

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Carnelian and Andesine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Carnelian and Andesine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Carnelian and Andesine Optical Properties during the identification of gemstone. Specific gravity of Carnelian is 2.65-2.69 whereas that of Andesine is 2.65-2.69.