Topaz and Rossmanite Physical Properties

Topaz

Rossmanite

Add ⊕

1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.49-3.573

1 7.18

1.5 Fracture

Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle

Brittle, Metallic

1.6 Cleavage

[001] Perfect

None

1.7 Mohs Hardness

8Not Available

2 10

1.8 Chemical Composition

Al₂SiO₄(F,OH)₂

◻(LiAl 2)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Topaz and Rossmanite Chemical Formula

While comparing Topaz and Rossmanite 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 Topaz and Rossmanite chemical formula.

Chemical formula of Topaz- Al₂SiO₄(F,OH)₂
Chemical formula of Rossmanite- ◻(LiAl 2)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Compare Gems for Sagittarius

Topaz Vs Petoskey Stone

Topaz Vs Quartz Smoky

Topaz Vs Pietersite

Topaz and Rossmanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Topaz and Rossmanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Rossmanite Optical Properties during the identification of gemstone. Specific gravity of Topaz is 3 whereas that of Rossmanite is 3.