Black Opal and Apache Tear Physical Properties

Black Opal

Apache Tear

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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

1.97-2.22Not Available

1 7.18

1.5 Fracture

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

Conchoidal

1.6 Cleavage

Not Available

1.7 Mohs Hardness

6-6.55-5.5

2 10

1.8 Chemical Composition

SiO 2 + H 2OUlrich Henn and Claudio C.

Not Available

Black Opal and Apache Tear Chemical Formula

While comparing Black Opal and Apache Tear 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 Black Opal and Apache Tear chemical formula.

Chemical formula of Black Opal- SiO 2 + H 2OUlrich Henn and Claudio C.

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Black Opal Vs Caledonite

Black Opal Vs Brucite

Black Opal Vs Boulder Opal

Black Opal and Apache Tear Specific Gravity

Another important criteria for qualitative analysis of gemstones is Black Opal and Apache Tear Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Black Opal and Apache Tear Optical Properties during the identification of gemstone. Specific gravity of Black Opal is Not Available whereas that of Apache Tear is Not Available.