Vivianite and Chrome Pyrope Physical Properties

Vivianite

Chrome Pyrope

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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

2.64-2.703.62-3.80

1 7.18

1.5 Fracture

(e.g. graphite).

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

1.6 Cleavage

{010} Perfect

Not Available

1.7 Mohs Hardness

Not Available7-7.5

2 10

1.8 Chemical Composition

Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

Mg 3(Al,Cr) 2(SiO 4) 3Gemdat.org , Management Team (2012)

Vivianite and Chrome Pyrope Chemical Formula

While comparing Vivianite and Chrome Pyrope 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 Vivianite and Chrome Pyrope chemical formula.

Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
Chemical formula of Chrome Pyrope- Mg 3(Al,Cr) 2(SiO 4) 3Gemdat.org , Management Team (2012)

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Vivianite and Chrome Pyrope Specific Gravity

Another important criteria for qualitative analysis of gemstones is Vivianite and Chrome Pyrope Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vivianite and Chrome Pyrope Optical Properties during the identification of gemstone. Specific gravity of Vivianite is 3.62-3.80 whereas that of Chrome Pyrope is 3.62-3.80.