Gibbsite and Ametrine Physical Properties

Gibbsite

Ametrine

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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

2.352.65

1 7.18

1.5 Fracture

Fibrous, Difficult, Fibrous

Not Available

1.6 Cleavage

{001} Perfect

Indiscernible

1.7 Mohs Hardness

2.5-37

2 10

1.8 Chemical Composition

Al(OH)3

SiO₂

Gibbsite and Ametrine Chemical Formula

While comparing Gibbsite and Ametrine 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 Gibbsite and Ametrine chemical formula.

Chemical formula of Gibbsite- Al(OH)3
Chemical formula of Ametrine- SiO₂

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Gibbsite and Ametrine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Gibbsite and Ametrine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gibbsite and Ametrine Optical Properties during the identification of gemstone. Specific gravity of Gibbsite is 2.65 whereas that of Ametrine is 2.65.