Wardite and Onyx Physical Properties

Wardite

Onyx

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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

2.812.55-2.70

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

Not Available

1.6 Cleavage

{001} Perfect

Indiscernible

1.7 Mohs Hardness

4.5-56.5-7

2 10

1.8 Chemical Composition

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

SiO₂

Wardite and Onyx Chemical Formula

While comparing Wardite and Onyx 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 Wardite and Onyx chemical formula.

Chemical formula of Wardite- NaAl 3(PO 4) 2(OH) 4 · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Onyx- SiO₂

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Wardite and Onyx Specific Gravity

Another important criteria for qualitative analysis of gemstones is Wardite and Onyx Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Wardite and Onyx Optical Properties during the identification of gemstone. Specific gravity of Wardite is 2.55-2.70 whereas that of Onyx is 2.55-2.70.