Onyx and Amblygonite Physical Properties

Onyx

Amblygonite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.55-2.702.98-3.10

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

Indiscernible

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

1.7 Mohs Hardness

6.5-76

2 10

1.8 Chemical Composition

SiO₂

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

Onyx and Amblygonite Chemical Formula

While comparing Onyx 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 Onyx and Amblygonite chemical formula.

Chemical formula of Onyx- SiO₂
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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Onyx and Amblygonite Specific Gravity

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