Londonite and Lazurite Physical Properties

Londonite

Lazurite

Add ⊕

1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.342.75

1 7.18

1.5 Fracture

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

Uneven, UnevenArthur Thomas, Gemstones (2009), Conchoidal, Brittle

1.6 Cleavage

None

Imperfect on {110}

1.7 Mohs Hardness

Not Available5.5

2 10

1.8 Chemical Composition

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

(Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.

Londonite and Lazurite Chemical Formula

While comparing Londonite and Lazurite 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 Lazurite 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 Lazurite- (Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.

Compare White Gemstones

Londonite Vs Milk Opal

Londonite Vs Mohawkite

Londonite Vs Montebrasite

Londonite and Lazurite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Londonite and Lazurite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Londonite and Lazurite Optical Properties during the identification of gemstone. Specific gravity of Londonite is 2.75 whereas that of Lazurite is 2.75.