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Sphalerite
Sphalerite

Rosasite
Rosasite



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Sphalerite
X
Rosasite

Sphalerite and Rosasite Optical Properties

Optical Properties

Luster

Adamantine
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

0.160.03
0.005 1
👆🏻

Transparency

Transparent, Translucent
-

Refractive Index

2.368-2.3711.672-1.688
1 3.25
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Optic Character

-
-

Crystal System

Isometric
monoclinic

Birefringence

-99990.139-0.143
0 0.296
👆🏻

Clarity

Transparent
-

Sphalerite and Rosasite Optic Character

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

Sphalerite and Rosasite Transparency

Similar to their colors, Sphalerite 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, Sphalerite is Transparent and Translucent while Sphalerite is Transparent and Translucent in appearance.