Kyanite and Amblygonite Physical Properties

Kyanite

Amblygonite

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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

3.53-3.652.98-3.10

1 7.18

1.5 Fracture

Splintery, Brittle, Metallic

Sub-Conchoidal, Irregular/uneven, Sub-Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

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

[100] Perfect, [110] Good, [011] Distinct

1.7 Mohs Hardness

4-76

2 10

1.8 Chemical Composition

Not Available

(Li,Na)Al(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

Kyanite and Amblygonite Chemical Formula

While comparing Kyanite and Amblygonite 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 Amblygonite chemical formula.

Chemical formula of Amblygonite- (Li,Na)Al(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Kyanite and Amblygonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kyanite and Amblygonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kyanite and Amblygonite Optical Properties during the identification of gemstone. Specific gravity of Kyanite is 2.98-3.10 whereas that of Amblygonite is 2.98-3.10.