Amethyst and Ludlamite Physical Properties

Amethyst

Ludlamite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

insoluble in common solvents

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.653.1-3.2

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

Indiscernible

Vitreous, pearly on cleavage

1.7 Mohs Hardness

73-4

2 10

1.8 Chemical Composition

SiO₂

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

Amethyst and Ludlamite Chemical Formula

While comparing Amethyst 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 Amethyst and Ludlamite chemical formula.

Chemical formula of Amethyst- SiO₂
Chemical formula of Ludlamite- (Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Amethyst and Ludlamite Specific Gravity

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