Andesine and Hardystonite Physical Properties

Andesine

Hardystonite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.65-2.693.396-3.443

1 7.18

1.5 Fracture

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

Brittle, Metallic

1.6 Cleavage

Perfect on {001}, good on {010}

[001] good, [100] and [110] fair

1.7 Mohs Hardness

6-6.53-4

2 10

1.8 Chemical Composition

(Na,Ca)Al_1-2Si_3-2O₈

Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)

Andesine and Hardystonite Chemical Formula

While comparing Andesine and Hardystonite 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 Andesine and Hardystonite chemical formula.

Chemical formula of Andesine- (Na,Ca)Al_1-2Si_3-2O₈
Chemical formula of Hardystonite- Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)

Compare Red Gemstones

Andesine Vs Bloodstone Heliotrope

Andesine Vs Blue John

Andesine Vs Black Opal

Andesine and Hardystonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Andesine and Hardystonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andesine and Hardystonite Optical Properties during the identification of gemstone. Specific gravity of Andesine is 3.396-3.443 whereas that of Hardystonite is 3.396-3.443.