Hibonite and Boulder Opal Physical Properties

Hibonite

Boulder Opal

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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

3.841.98-2.25

1 7.18

1.5 Fracture

Subconchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

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

1.6 Cleavage

{0001} good, {10 1 0} parting

Not Available

1.7 Mohs Hardness

7.5-85-6.5

2 10

1.8 Chemical Composition

(Ca,Ce)(Al,Ti,Mg)12O19

SiO 2 + H 2OUlrich Henn and Claudio C.

Hibonite and Boulder Opal Chemical Formula

While comparing Hibonite 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 Hibonite and Boulder Opal chemical formula.

Chemical formula of Hibonite- (Ca,Ce)(Al,Ti,Mg)12O19
Chemical formula of Boulder Opal- SiO 2 + H 2OUlrich Henn and Claudio C.

Compare Blue Gemstones

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Hibonite and Boulder Opal Specific Gravity

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