Topaz and Ludlamite Physical Properties

Topaz

Ludlamite

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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

3.49-3.573.1-3.2

1 7.18

1.5 Fracture

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

UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

[001] Perfect

Vitreous, pearly on cleavage

1.7 Mohs Hardness

83-4

2 10

1.8 Chemical Composition

Al₂SiO₄(F,OH)₂

(Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Topaz and Ludlamite Chemical Formula

While comparing Topaz and Ludlamite 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 Ludlamite chemical formula.

Chemical formula of Topaz- Al₂SiO₄(F,OH)₂
Chemical formula of Ludlamite- (Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Gems for Sagittarius

Topaz Vs Pietersite

Topaz Vs Quartz Smoky

Topaz Vs Petoskey Stone

Topaz and Ludlamite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Topaz and Ludlamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Ludlamite Optical Properties during the identification of gemstone. Specific gravity of Topaz is 3.1-3.2 whereas that of Ludlamite is 3.1-3.2.