Demantoid and Herderite Physical Properties

Demantoid

Herderite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.77-3.952.90-3.02

1 7.18

1.5 Fracture

Not Available

Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle

1.6 Cleavage

Not Available

Indistinct on {110}

1.7 Mohs Hardness

6.55-5.5

2 10

1.8 Chemical Composition

Ca 3Fe 2(SiO 4) 3Ulrich Henn and Claudio C.

CaBePO 4(F,OH)Ulrich Henn and Claudio C.

Demantoid and Herderite Chemical Formula

While comparing Demantoid and Herderite 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 Demantoid and Herderite chemical formula.

Chemical formula of Demantoid- Ca 3Fe 2(SiO 4) 3Ulrich Henn and Claudio C.
Chemical formula of Herderite- CaBePO 4(F,OH)Ulrich Henn and Claudio C.

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Demantoid and Herderite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Demantoid and Herderite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Demantoid and Herderite Optical Properties during the identification of gemstone. Specific gravity of Demantoid is 2.90-3.02 whereas that of Herderite is 2.90-3.02.