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Carnelian
Carnelian

Ludlamite
Ludlamite



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Carnelian
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Ludlamite

Carnelian and Ludlamite Physical Properties

Physical Properties

Tenacity

-
-

Solubility

-
-

Durability

-
-

Specific Gravity

2.58-2.643.1-3.2
1 7.18
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Fracture

Uneven, Splintery, Conchoidal
-

Cleavage

Absent
Vitreous, pearly on cleavage

Mohs Hardness

6.5-73-4
2 10
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Chemical Composition

SiO2
(Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael O’Donoghue , 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 O’Donoghue , Gems, Sixth Edition (2006) More from other references

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.