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Rosasite
Rosasite

Bastnsite
Bastnsite



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Rosasite
X
Bastnsite

Rosasite and Bastnsite Optical Properties

Optical Properties

Luster

Silky, Vitreous
-

Pleochroism

Strong: X = pale emerald green or colourless; Y = dark emerald green or pale blue; Z = dark emerald green or pale blue
-

Dispersion

0.030.02
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.672-1.6881.72-1.82
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
-

Birefringence

0.139-0.143-9999
0 0.296
👆🏻

Clarity

-
-

Rosasite and Bastnsite Optic Character

Rosasite and Bastnsite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Rosasite and Bastnsite 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 Rosasite and Bastnsite 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.

Rosasite and Bastnsite Transparency

Similar to their colors, Rosasite and Bastnsite 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, Rosasite is while Rosasite is in appearance.