Catapleiite and Amethyst Physical Properties

Catapleiite

Amethyst

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

insoluble in common solvents

1.3 Durability

Not Available

1.4 Specific Gravity

2.722.65

1 7.18

1.5 Fracture

Brittle, Metallic, Brittle, Metallic

Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)

1.6 Cleavage

{110} Perfect, {010} Perfect

Indiscernible

1.7 Mohs Hardness

5-67

2 10

1.8 Chemical Composition

Na 2ZrSi 3O 9 · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

SiO₂

Catapleiite and Amethyst Chemical Formula

While comparing Catapleiite and Amethyst 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 Catapleiite and Amethyst chemical formula.

Chemical formula of Catapleiite- Na 2ZrSi 3O 9 · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Amethyst- SiO₂

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Catapleiite and Amethyst Specific Gravity

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