Carnelian and Vivianite Physical Properties

Carnelian

Vivianite

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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

2.58-2.642.64-2.70

1 7.18

1.5 Fracture

Uneven, Splintery, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)

(e.g. graphite).

1.6 Cleavage

Absent

{010} Perfect

1.7 Mohs Hardness

6.5-7Not Available

2 10

1.8 Chemical Composition

SiO₂

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

Carnelian and Vivianite Chemical Formula

While comparing Carnelian and Vivianite 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 Carnelian and Vivianite chemical formula.

Chemical formula of Carnelian- SiO₂
Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

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Carnelian and Vivianite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Carnelian and Vivianite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Carnelian and Vivianite Optical Properties during the identification of gemstone. Specific gravity of Carnelian is 2.64-2.70 whereas that of Vivianite is 2.64-2.70.