Londonite and Prasiolite Physical Properties

Londonite

Prasiolite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.342.65

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

None

3,1

1.7 Mohs Hardness

Not Available7

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 Prasiolite Chemical Formula

While comparing Londonite and Prasiolite 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 Prasiolite 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 Prasiolite- SiO 2Ulrich Henn and Claudio C.

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Londonite and Prasiolite Specific Gravity

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