Sard and Andesine Physical Properties

Sard

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

2.58-2.63

2.65-2.69

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

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

1.6 Cleavage

Not Available

Perfect on {001}, good on {010}

1.7 Mohs Hardness

6.5-7

6-6.5

1.8 Chemical Composition

SiO 2Ulrich Henn and Claudio C.

(Na,Ca)Al_1-2Si_3-2O₈

Sard and Andesine Chemical Formula

While comparing Sard 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 Sard and Andesine chemical formula.

Chemical formula of Sard- SiO 2Ulrich Henn and Claudio C.
Chemical formula of Andesine- (Na,Ca)Al_1-2Si_3-2O₈

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Sard and Andesine Specific Gravity

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