Kyanite and Brazilianite Physical Properties

Kyanite

Brazilianite

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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

3.53-3.652.98-2.99

1 7.18

1.5 Fracture

Splintery, Brittle, Metallic

Conchoidal, Gems

1.6 Cleavage

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

(010) Distinct to good

1.7 Mohs Hardness

4-75.5

2 10

1.8 Chemical Composition

Not Available

NaAl 3(PO 4) 2(OH) 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Kyanite and Brazilianite Chemical Formula

While comparing Kyanite and Brazilianite 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 Brazilianite chemical formula.

Chemical formula of Brazilianite- NaAl 3(PO 4) 2(OH) 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Blue Gemstones

Kyanite Vs Swiss blue topaz

Kyanite Vs Kashmir sapphire

Kyanite Vs Blue quartz

Kyanite and Brazilianite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kyanite and Brazilianite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kyanite and Brazilianite Optical Properties during the identification of gemstone. Specific gravity of Kyanite is 2.98-2.99 whereas that of Brazilianite is 2.98-2.99.