Tanzanite and Boulder Opal Physical Properties

Tanzanite

Boulder Opal

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Hard

Not Available

1.4 Specific Gravity

3.35

1.98-2.25

1.5 Fracture

Uneven, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)

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

1.6 Cleavage

Perfect {010}, imperfect {100}

Not Available

1.7 Mohs Hardness

6.5-7

5-6.5

1.8 Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

SiO 2 + H 2OUlrich Henn and Claudio C.

Tanzanite and Boulder Opal Chemical Formula

While comparing Tanzanite and Boulder 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 Tanzanite and Boulder Opal chemical formula.

Chemical formula of Tanzanite- Ca₂Al₃(SiO₄)₃(OH)
Chemical formula of Boulder Opal- SiO 2 + H 2OUlrich Henn and Claudio C.

Compare Semi Precious Gemstones

Tanzanite Vs Beryl

Tanzanite Vs Amethyst

Tanzanite Vs Alexandrite

Tanzanite and Boulder Opal Specific Gravity

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

Semi Precious

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Peridot

Lehsunia

Alexandrite

Amethyst