Grandidierite and Rock Crystal Physical Properties

Grandidierite

Rock Crystal

Add ⊕

1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.85-3.002.65

1 7.18

1.5 Fracture

Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven

ConchoidalWalter Schumann, Gemstones of the world (2001), ConchoidalWalter Schumann, Gemstones of the world (2001)

1.6 Cleavage

Perfect

Not Available

1.7 Mohs Hardness

7.57

2 10

1.8 Chemical Composition

(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.

SiO 2Walter Schumann , Gemstones of the world (2001)

Grandidierite and Rock Crystal Chemical Formula

While comparing Grandidierite and Rock Crystal 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 Grandidierite and Rock Crystal chemical formula.

Chemical formula of Grandidierite- (Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
Chemical formula of Rock Crystal- SiO 2Walter Schumann , Gemstones of the world (2001)

Compare Green Gemstones

Grandidierite Vs Hiddenite

Grandidierite Vs Hydrogrossular

Grandidierite Vs Hurlbutite

Grandidierite and Rock Crystal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Grandidierite and Rock Crystal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Grandidierite and Rock Crystal Optical Properties during the identification of gemstone. Specific gravity of Grandidierite is 2.65 whereas that of Rock Crystal is 2.65.