Topaz and Agrellite Physical Properties

Topaz

Agrellite

Add ⊕

1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.49-3.572.88

1 7.18

1.5 Fracture

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

Not Available

1.6 Cleavage

[001] Perfect

perfect [110]

1.7 Mohs Hardness

85.5

2 10

1.8 Chemical Composition

Al₂SiO₄(F,OH)₂

NaCa2Si4O10F

Topaz and Agrellite Chemical Formula

While comparing Topaz and Agrellite 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 Agrellite chemical formula.

Chemical formula of Topaz- Al₂SiO₄(F,OH)₂
Chemical formula of Agrellite- NaCa2Si4O10F

Compare Gems for Sagittarius

Topaz Vs Pietersite

Topaz Vs Quartz Smoky

Topaz Vs Petoskey Stone

Topaz and Agrellite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Topaz and Agrellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Agrellite Optical Properties during the identification of gemstone. Specific gravity of Topaz is 2.88 whereas that of Agrellite is 2.88.