Kyanite and Harlequin Opal Physical Properties

Kyanite

Harlequin 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

Conchoidal, Conchoidal, Gemstones of the world (2001)

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 Harlequin Opal Chemical Formula

While comparing Kyanite and Harlequin 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 Harlequin Opal chemical formula.

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

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Kyanite and Harlequin Opal Specific Gravity

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