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Sard
Sard

Herderite
Herderite



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Sard
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Herderite

Sard and Herderite Physical Properties

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1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.58-2.632.90-3.02
Amber
1 7.18
1.5 Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
1.6 Cleavage
Not Available
Indistinct on {110}
1.7 Mohs Hardness
6.5-75-5.5
Amber
2 10
1.8 Chemical Composition
SiO 2Ulrich Henn and Claudio C.
CaBePO 4(F,OH)Ulrich Henn and Claudio C.

Sard and Herderite Chemical Formula

While comparing Sard 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 Sard and Herderite chemical formula.

  • Chemical formula of Sard- SiO 2Ulrich Henn and Claudio C.
  • Chemical formula of Herderite- CaBePO 4(F,OH)Ulrich Henn and Claudio C.

Sard and Herderite Specific Gravity

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