Erythrite and Iolite Physical Properties

Erythrite

Iolite

Add ⊕

1 Physical Properties

1.1 Tenacity

Sectile

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.062.6-2.7

1 7.18

1.5 Fracture

Sectile Curved shavings or scrapings produced by a knife blade, (e.g. graphite).

Not Available

1.6 Cleavage

Perfect on {010}; poor on {100} and { 1 02}.

3,1

1.7 Mohs Hardness

Not Available7-7.5

2 10

1.8 Chemical Composition

Co3(AsO4)2•8(H2O)

Mg₂Al₄Si₅O₁₈

Erythrite and Iolite Chemical Formula

While comparing Erythrite and Iolite 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 Erythrite and Iolite chemical formula.

Chemical formula of Erythrite- Co3(AsO4)2•8(H2O)
Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈

Compare Red Gemstones

Erythrite Vs Polyhalite

Erythrite Vs Richterite

Erythrite Vs Stolzite

Erythrite and Iolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Erythrite and Iolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Erythrite and Iolite Optical Properties during the identification of gemstone. Specific gravity of Erythrite is 2.6-2.7 whereas that of Iolite is 2.6-2.7.