Londonite and Sardonyx Physical Properties

Londonite

Sardonyx

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.342.55-2.70

1 7.18

1.5 Fracture

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

Not Available

1.6 Cleavage

None

Not Available

1.7 Mohs Hardness

Not Available6.5-7

2 10

1.8 Chemical Composition

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

SiO 2Ulrich Henn and Claudio C.

Londonite and Sardonyx Chemical Formula

While comparing Londonite and Sardonyx 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 Londonite and Sardonyx chemical formula.

Chemical formula of Londonite- (Cs,K,Rb)Al 4Be 4(B,Be) 12O 28Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Sardonyx- SiO 2Ulrich Henn and Claudio C.

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Londonite and Sardonyx Specific Gravity

Another important criteria for qualitative analysis of gemstones is Londonite and Sardonyx Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Londonite and Sardonyx Optical Properties during the identification of gemstone. Specific gravity of Londonite is 2.55-2.70 whereas that of Sardonyx is 2.55-2.70.