Pleonaste and Sard Physical Properties

Pleonaste

Sard

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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

3.802.58-2.63

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

Not Available

1.7 Mohs Hardness

86.5-7

2 10

1.8 Chemical Composition

(Mg,Fe)Al 2O 4Gemdat.org , Management Team (2012)

SiO 2Ulrich Henn and Claudio C.

Pleonaste and Sard Chemical Formula

While comparing Pleonaste 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 Pleonaste and Sard chemical formula.

Chemical formula of Pleonaste- (Mg,Fe)Al 2O 4Gemdat.org , Management Team (2012)
Chemical formula of Sard- SiO 2Ulrich Henn and Claudio C.

Compare Blue Gemstones

Pleonaste Vs Pyrophyllite

Pleonaste Vs Rock Crystal

Pleonaste Vs Rubellite

Pleonaste and Sard Specific Gravity

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