Boracite and Precious Opal Physical Properties

Boracite

Precious Opal

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.95-2.961.98-2.25

1 7.18

1.5 Fracture

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

Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references

1.6 Cleavage

None

Not Available

1.7 Mohs Hardness

7-7.55-6.5

2 10

1.8 Chemical Composition

Mg 3B 7O 13ClMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

SiO 2 · nH 2OGemdat.org , Management Team (2012)

Boracite and Precious Opal Chemical Formula

While comparing Boracite and Precious Opal 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 Boracite and Precious Opal chemical formula.

Chemical formula of Boracite- Mg 3B 7O 13ClMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Precious Opal- SiO 2 · nH 2OGemdat.org , Management Team (2012)

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Boracite and Precious Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Boracite and Precious Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Boracite and Precious Opal Optical Properties during the identification of gemstone. Specific gravity of Boracite is 1.98-2.25 whereas that of Precious Opal is 1.98-2.25.