Milarite and Onyx Physical Properties

Milarite

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

2.52-2.602.55-2.70

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Metallic

Not Available

1.6 Cleavage

{0001} Imperfect, {1120} Imperfect

Indiscernible

1.7 Mohs Hardness

5.5-66.5-7

2 10

1.8 Chemical Composition

KCa 2AlBe 2Si 12O 30 · 0.5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

SiO₂

Milarite and Onyx Chemical Formula

While comparing Milarite 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 Milarite and Onyx chemical formula.

Chemical formula of Milarite- KCa 2AlBe 2Si 12O 30 · 0.5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Onyx- SiO₂

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Milarite and Onyx Specific Gravity

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