Kyanite and Uvite Physical Properties

Kyanite

Uvite

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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

3.53-3.652.97-3.14

1 7.18

1.5 Fracture

Splintery, Brittle, Metallic

Uneven, Conchoidal, Brittle

1.6 Cleavage

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

{1011} Indistinct

1.7 Mohs Hardness

4-7Not Available

2 10

1.8 Chemical Composition

Not Available

Ca(Mg 3)MgAl 5(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Kyanite and Uvite Chemical Formula

While comparing Kyanite and Uvite 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 Uvite chemical formula.

Chemical formula of Uvite- Ca(Mg 3)MgAl 5(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

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Kyanite and Uvite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kyanite and Uvite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kyanite and Uvite Optical Properties during the identification of gemstone. Specific gravity of Kyanite is 2.97-3.14 whereas that of Uvite is 2.97-3.14.