Kyanite and Alabaster Physical Properties

Kyanite

Alabaster

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.53-3.652.30

1 7.18

1.5 Fracture

Splintery, Brittle, Metallic

Not Available

1.6 Cleavage

[100] perfect [010] imperfect with 79° angle between

Not Available

1.7 Mohs Hardness

4-72

2 10

1.8 Chemical Composition

Not Available

CaSO 4 · 2H 2OWalter Schumann , Gemstones of the world (2001)

Kyanite and Alabaster Chemical Formula

While comparing Kyanite and Alabaster 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 Kyanite and Alabaster chemical formula.

Chemical formula of Alabaster- CaSO 4 · 2H 2OWalter Schumann , Gemstones of the world (2001)

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Kyanite and Alabaster Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kyanite and Alabaster Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kyanite and Alabaster Optical Properties during the identification of gemstone. Specific gravity of Kyanite is 2.30 whereas that of Alabaster is 2.30.