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Grossular
Grossular

Rosasite
Rosasite



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Grossular
X
Rosasite

Grossular and Rosasite Optical Properties

Optical Properties

Luster

Greasy, Vitreous
Silky, Vitreous

Pleochroism

None
Strong: X = pale emerald green or colourless; Y = dark emerald green or pale blue; Z = dark emerald green or pale blue

Dispersion

0.020.03
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.730-1.7601.672-1.688
1 3.25
👆🏻

Optic Character

-
-

Crystal System

cubic
monoclinic

Birefringence

0.0200.139-0.143
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
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Grossular and Rosasite Optic Character

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

Grossular and Rosasite Transparency

Similar to their colors, Grossular 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, Grossular is while Grossular is in appearance.