Onyx and Grandidierite Physical Properties

Onyx

Grandidierite

Add ⊕

1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.55-2.702.85-3.00

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

Indiscernible

Perfect

1.7 Mohs Hardness

6.5-77.5

2 10

1.8 Chemical Composition

SiO₂

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

Onyx and Grandidierite Chemical Formula

While comparing Onyx and Grandidierite 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 Onyx and Grandidierite chemical formula.

Chemical formula of Onyx- SiO₂
Chemical formula of Grandidierite- (Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.

Compare Gems for Capricorn » More

Onyx Vs Hawks Eye

Onyx Vs Quartz Smoky

Onyx Vs Crystal Quartz

» More

More Compare Gems for Capricorn

Onyx and Grandidierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Onyx and Grandidierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Onyx and Grandidierite Optical Properties during the identification of gemstone. Specific gravity of Onyx is 2.85-3.00 whereas that of Grandidierite is 2.85-3.00.