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Rock Crystal
Rock Crystal

Emerald
Emerald



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Rock Crystal
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Emerald

Rock Crystal and Emerald Optical Properties

Optical Properties

Luster

-
Vitreous

Pleochroism

-
Strong dichroism: yellow green Lazzarelli

Dispersion

0.010.01
0.005 1
👆🏻

Transparency

TransparentWalter Schumann
Transparent, Translucent, Transparent to translucent

Refractive Index

1.544-1.5531.565-1.602
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Hexagonal

Birefringence

0.0090.0040-0.0070
0 0.296
👆🏻

Clarity

TransparentWalter Schumann
-

Rock Crystal and Emerald Optic Character

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

Rock Crystal and Emerald Transparency

Similar to their colors, Rock Crystal and Emerald 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, Rock Crystal is TransparentWalter Schumann while Rock Crystal is TransparentWalter Schumann in appearance.