Onyx and Eosphorite Physical Properties

Onyx

Eosphorite

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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

2.55-2.703.05-3.08

1 7.18

1.5 Fracture

Not Available

Subconchoidal, Uneven, Conchoidal, Uneven

1.6 Cleavage

Indiscernible

Poor on {100}

1.7 Mohs Hardness

6.5-75

2 10

1.8 Chemical Composition

SiO₂

Mn2+ Al(PO 4)(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

Onyx and Eosphorite Chemical Formula

While comparing Onyx and Eosphorite 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 Eosphorite chemical formula.

Chemical formula of Onyx- SiO₂
Chemical formula of Eosphorite- Mn2+ Al(PO 4)(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

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Onyx and Eosphorite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Onyx and Eosphorite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Onyx and Eosphorite Optical Properties during the identification of gemstone. Specific gravity of Onyx is 3.05-3.08 whereas that of Eosphorite is 3.05-3.08.