Ruby and Herderite Physical Properties

Ruby

Herderite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.97-4.052.90-3.02

1 7.18

1.5 Fracture

Conchoidal

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

1.6 Cleavage

No true cleavage

Indistinct on {110}

1.7 Mohs Hardness

95-5.5

2 10

1.8 Chemical Composition

Al ₂ O ₃

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

Ruby and Herderite Chemical Formula

While comparing Ruby 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 Ruby and Herderite chemical formula.

Chemical formula of Ruby- Al ₂ O ₃
Chemical formula of Herderite- CaBePO 4(F,OH)Ulrich Henn and Claudio C.

Ruby and Herderite Specific Gravity

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