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Crocoite
Crocoite

Sunstone
Sunstone



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Crocoite
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Sunstone

Crocoite and Sunstone Optical Properties

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Optical Properties

Luster

Adamantine
Vitreous

Pleochroism

Distinctly trichroic
Weak or absentWalter Schumann

Dispersion

0.020.01
0.005 1
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Transparency

Transparent
Transparent, Translucent, Transparent to translucent

Refractive Index

2.31-2.661.53-1.55
1 3.25
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Optic Character

-
-

Crystal System

Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/n
Triclinic

Birefringence

-99990.007-0.010
0 0.296
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Clarity

Transparent
Transparent to translucent

Crocoite and Sunstone Optic Character

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

Crocoite and Sunstone Transparency

Similar to their colors, Crocoite and Sunstone 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, Crocoite is Transparent while Crocoite is Transparent in appearance.