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Gypsum
Gypsum

Hydrogrossular
Hydrogrossular



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Gypsum
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Hydrogrossular

Gypsum and Hydrogrossular Optical Properties

Optical Properties

Luster

Vitreous, Silky, Pearly, Waxy
-

Pleochroism

None
-

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

Transparent, Translucent
Translucent

Refractive Index

1.521-1.5311.680-1.712
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
-

Birefringence

0.010-9999
0 0.296
👆🏻

Clarity

Transparent
Translucent

Gypsum and Hydrogrossular Optic Character

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

Gypsum and Hydrogrossular Transparency

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