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Pleonaste
Pleonaste

Sunstone
Sunstone



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Pleonaste
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Sunstone

Pleonaste and Sunstone Optical Properties

Optical Properties

Luster

-
Vitreous

Pleochroism

-
Weak or absentWalter Schumann

Dispersion

0.030.01
0.005 1
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Transparency

-
Transparent, Translucent, Transparent to translucent

Refractive Index

1.7801.53-1.55
1 3.25
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Optic Character

-
-

Crystal System

-
Triclinic

Birefringence

-99990.007-0.010
0 0.296
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Clarity

-
Transparent to translucent

Pleonaste and Sunstone Optic Character

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

Pleonaste and Sunstone Transparency

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