Amethyst and Rhodizite Physical Properties

Amethyst

Rhodizite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

insoluble in common solvents

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.653.34-3.44

1 7.18

1.5 Fracture

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

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle

1.6 Cleavage

Indiscernible

{111} Indistinct, {111} Indistinct, {111} Indistinct

1.7 Mohs Hardness

78-8.5

2 10

1.8 Chemical Composition

SiO₂

(K,Cs)Al 4Be 4(B,Be) 12O 28Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Amethyst and Rhodizite Chemical Formula

While comparing Amethyst and Rhodizite 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 Rhodizite chemical formula.

Chemical formula of Amethyst- SiO₂
Chemical formula of Rhodizite- (K,Cs)Al 4Be 4(B,Be) 12O 28Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Amethyst and Rhodizite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Amethyst and Rhodizite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Amethyst and Rhodizite Optical Properties during the identification of gemstone. Specific gravity of Amethyst is 3.34-3.44 whereas that of Rhodizite is 3.34-3.44.