Rubellite and Childrenite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Soluble
Durability
Not Available
Not Available
Specific Gravity
3.01-3.06
3.06-3.25
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Sub-Conchoidal, ConchoidalArthur Thomas, Conchoidal, Uneven
Cleavage
Not Available
Poor/indistinct on {100}
Mohs Hardness
7-7.5
4.5-5
Chemical Composition
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
(Fe,Mn)AlPO 4(OH) 2 -H 2OArthur Thomas , Gemstones (2009)
Rubellite and Childrenite Chemical Formula
While comparing Rubellite and Childrenite 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 Rubellite and Childrenite chemical formula.
- Chemical formula of Rubellite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
- Chemical formula of Childrenite- (Fe,Mn)AlPO 4(OH) 2 -H 2OArthur Thomas , Gemstones (2009)
Rubellite and Childrenite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Rubellite and Childrenite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rubellite and Childrenite Optical Properties during the identification of gemstone. Specific gravity of Rubellite is 3.06-3.25 whereas that of Childrenite is 3.06-3.25.