Forsterite and Blue John Physical Properties

Forsterite

Blue John

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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

3.23-3.263.00-3.25

1 7.18

1.5 Fracture

Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

Not Available

1.6 Cleavage

Perfect on {010} imperfect on {100}

Not Available

1.7 Mohs Hardness

6.5-7Not Available

2 10

1.8 Chemical Composition

Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

CaF 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Forsterite and Blue John Chemical Formula

While comparing Forsterite and Blue John 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 Forsterite and Blue John chemical formula.

Chemical formula of Forsterite- Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Blue John- CaF 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Green Gemstones

Forsterite Vs Hackmanite

Forsterite Vs Grandidierite

Forsterite Vs Grossular

Forsterite and Blue John Specific Gravity

Another important criteria for qualitative analysis of gemstones is Forsterite and Blue John Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Forsterite and Blue John Optical Properties during the identification of gemstone. Specific gravity of Forsterite is 3.00-3.25 whereas that of Blue John is 3.00-3.25.