Amethyst and Siderite Physical Properties

Amethyst

Siderite

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2 Physical Properties

2.2 Tenacity

Not Available

Brittle

2.3 Solubility

insoluble in common solvents

Not Available

2.5 Durability

Not Available

2.7 Specific Gravity

2.653.83-3.89

1 7.18

2.9 Fracture

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

Uneven, Conchoidal, UnevenArthur Thomas, Brittle

2.11 Cleavage

Indiscernible

Perfect on {01 1 1}

2.13 Mohs Hardness

73.5-4.5

2 10

2.15 Chemical Composition

SiO₂

Fe2+ CO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Amethyst and Siderite Chemical Formula

While comparing Amethyst and Siderite 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 Amethyst and Siderite chemical formula.

Chemical formula of Amethyst- SiO₂
Chemical formula of Siderite- Fe2+ CO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Amethyst and Siderite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Amethyst and Siderite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Amethyst and Siderite Optical Properties during the identification of gemstone. Specific gravity of Amethyst is 3.83-3.89 whereas that of Siderite is 3.83-3.89.