Kyanite and Boulder Opal Physical Properties

Kyanite

Boulder Opal

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.53-3.65

1.98-2.25

1.5 Fracture

Splintery, Brittle, Metallic

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

1.6 Cleavage

[100] perfect [010] imperfect with 79° angle between

Not Available

1.7 Mohs Hardness

4-7

5-6.5

1.8 Chemical Composition

Not Available

SiO 2 + H 2OUlrich Henn and Claudio C.

Kyanite and Boulder Opal Chemical Formula

While comparing Kyanite 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 Kyanite and Boulder Opal chemical formula.

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

Compare Blue Gemstones

Kyanite Vs Swiss blue topaz

Kyanite Vs Kashmir sapphire

Kyanite Vs Blue quartz

Kyanite and Boulder Opal Specific Gravity

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

Blue Gemstones

Tourmaline Bi Color

Quantum Quattro

Cat s Eye

Milky quartz

Kashmir sapphire

Blue quartz