Gedrite and Amethyst Physical Properties

Gedrite

Amethyst

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Physical Properties

Tenacity

Solubility

insoluble in common solvents

Durability

Specific Gravity

3.15-3.2592.65

1 7.18

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Fracture

Conchoidal, ConchoidalWalter Schumann

Cleavage

Gedrite Magnesiogedrite , Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite). , Location: Bamble, Telemark, Norway. , Scale: See Image.

Indiscernible

Mohs Hardness

5.5-67

2 10

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Chemical Composition

(Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)

SiO₂

Gedrite and Amethyst Chemical Formula

While comparing Gedrite 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 Gedrite and Amethyst chemical formula.

Chemical formula of Gedrite- (Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Amethyst- SiO₂

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Gedrite and Amethyst Specific Gravity

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