Erythrite and Sard Physical Properties

Erythrite

Sard

Add ⊕

1 Physical Properties

1.1 Tenacity

Sectile

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.06

2.58-2.63

1.5 Fracture

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

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

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

Not Available

1.7 Mohs Hardness

Not Available

6.5-7

1.8 Chemical Composition

Co3(AsO4)2•8(H2O)

SiO 2Ulrich Henn and Claudio C.

Erythrite and Sard Chemical Formula

While comparing Erythrite and Sard 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 Sard chemical formula.

Chemical formula of Erythrite- Co3(AsO4)2•8(H2O)
Chemical formula of Sard- SiO 2Ulrich Henn and Claudio C.

Compare Red Gemstones

Erythrite Vs Stolzite

Erythrite Vs Polyhalite

Erythrite Vs Richterite

Erythrite and Sard Specific Gravity

Another important criteria for qualitative analysis of gemstones is Erythrite and Sard Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Erythrite and Sard Optical Properties during the identification of gemstone. Specific gravity of Erythrite is 2.58-2.63 whereas that of Sard is 2.58-2.63.

Red Gemstones

Kainite

Langbeinite

Nickeline

Phlogopite

Polyhalite

Richterite