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Cassiterite
Cassiterite

Rosasite
Rosasite



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Cassiterite
X
Rosasite

Cassiterite and Rosasite Optical Properties

Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Adamantine, Greasy
Pleochroic haloes have been observed. Dichroic in yellow
0.07
Transparent, Translucent
1.990-2.105
-
tetragonal
0.096-0.098
Transparent
 
Silky, Vitreous
Strong: X = pale emerald green or colourless; Y = dark emerald green or pale blue; Z = dark emerald green or pale blue
0.03
-
1.672-1.688
-
monoclinic
0.139-0.143
-

Cassiterite and Rosasite Optic Character

Cassiterite and Rosasite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Cassiterite and Rosasite Physical Properties like crystallographic symmetry, pleochroism,etc. in the crystal. Some of the optical properties are refractive index, luster, optic character, pleochroism etc. Prominent among these is Cassiterite and Rosasite optic character. You might have noticed your gemologist rotating the gemstone while testing it. Rotating a gemstone along its optic axis helps in determining its optic character.

Cassiterite and Rosasite Transparency

Similar to their colors, Cassiterite and Rosasite transparency can also be used as criteria for their primary identification. Although transparency cannot be the only criteria for gemstone identification, it can efficiently used in gemstone grading. Talking about their transparency, Cassiterite is Transparent and Translucent while Cassiterite is Transparent and Translucent in appearance.