Amethyst and Londonite Physical Properties

Amethyst

Londonite

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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

1 7.18

1.5 Fracture

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

ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal

1.6 Cleavage

Indiscernible

None

1.7 Mohs Hardness

7Not Available

2 10

1.8 Chemical Composition

SiO₂

(Cs,K,Rb)Al 4Be 4(B,Be) 12O 28Anthony et al , Handbook of mineralogy (2001)

Amethyst and Londonite Chemical Formula

While comparing Amethyst and Londonite 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 Londonite chemical formula.

Chemical formula of Amethyst- SiO₂
Chemical formula of Londonite- (Cs,K,Rb)Al 4Be 4(B,Be) 12O 28Anthony et al , Handbook of mineralogy (2001)

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Amethyst and Londonite Specific Gravity

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