Carnelian and Ludlamite Physical Properties

Carnelian

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

2.58-2.643.1-3.2

1 7.18

1.5 Fracture

Uneven, Splintery, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)

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

1.6 Cleavage

Absent

Vitreous, pearly on cleavage

1.7 Mohs Hardness

6.5-73-4

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

Carnelian and Ludlamite Chemical Formula

While comparing Carnelian 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 Carnelian and Ludlamite chemical formula.

Chemical formula of Carnelian- 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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Carnelian and Ludlamite Specific Gravity

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