Holmquistite and Amethyst Physical Properties

Holmquistite

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

2.95-3.13

2.65

1.5 Fracture

Not Available

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

1.6 Cleavage

{210} Perfect

Indiscernible

1.7 Mohs Hardness

5-6

1.8 Chemical Composition

Li 2[(Mg,Fe2+ ) 3Al 2]Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)

SiO₂

Holmquistite and Amethyst Chemical Formula

While comparing Holmquistite 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 Holmquistite and Amethyst chemical formula.

Chemical formula of Holmquistite- Li 2[(Mg,Fe2+ ) 3Al 2]Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Amethyst- SiO₂

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Holmquistite and Amethyst Specific Gravity

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