Onyx and Celestine Physical Properties

Onyx

Celestine

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.55-2.703.90-4.00

1 7.18

1.5 Fracture

Not Available

Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal

1.6 Cleavage

Indiscernible

Perfect on {001}, good on {210}, poor on {010}

1.7 Mohs Hardness

6.5-73-3.5

2 10

1.8 Chemical Composition

SiO₂

SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Onyx and Celestine Chemical Formula

While comparing Onyx and Celestine 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 Celestine chemical formula.

Chemical formula of Onyx- SiO₂
Chemical formula of Celestine- SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Onyx and Celestine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Onyx and Celestine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Onyx and Celestine Optical Properties during the identification of gemstone. Specific gravity of Onyx is 3.90-4.00 whereas that of Celestine is 3.90-4.00.