Kyanite and Wood Opal Physical Properties

Kyanite

Wood Opal

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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

3.53-3.651.98-2.50

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

4-75.5-6.5

2 10

1.8 Chemical Composition

Not Available

SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)

Kyanite and Wood Opal Chemical Formula

While comparing Kyanite and Wood Opal 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 Wood Opal chemical formula.

Chemical formula of Wood Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)

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Kyanite and Wood Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kyanite and Wood Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kyanite and Wood Opal Optical Properties during the identification of gemstone. Specific gravity of Kyanite is 1.98-2.50 whereas that of Wood Opal is 1.98-2.50.