Zoisite and Lazulite Physical Properties

Zoisite

Lazulite

Add ⊕

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

3.20-3.503.04-3.17

1 7.18

👆🏻

Fracture

Uneven, Conchoidal, Even

Uneven

Cleavage

Perfect {010} imperfect {100}

{001} Indistinct, {???} Indistinct

Mohs Hardness

6-75.5

2 10

👆🏻

Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references

Zoisite and Lazulite Chemical Formula

While comparing Zoisite and Lazulite 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 Zoisite and Lazulite chemical formula.

Chemical formula of Zoisite- Ca₂Al₃(SiO₄)₃(OH)
Chemical formula of Lazulite- (Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references

Compare Brown Gemstones

Zoisite Vs Mottramite

Zoisite Vs Pyrrhotite

Zoisite Vs Vesuvianite

Zoisite and Lazulite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Zoisite and Lazulite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Zoisite and Lazulite Optical Properties during the identification of gemstone. Specific gravity of Zoisite is 3.04-3.17 whereas that of Lazulite is 3.04-3.17.