Crocoite and Emerald Optical Properties

Crocoite

Emerald

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1 Optical Properties

1.1 Luster

Adamantine

Vitreous

1.2 Pleochroism

Distinctly trichroic

Strong dichroism: yellow green Lazzarelli

1.3 Dispersion

NA0.01

0.007 1

1.4 Transparency

Transparent

Transparent, Translucent, Transparent to translucent

1.5 Refractive Index

2.31-2.661.565-1.602

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

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

Hexagonal

1.8 Birefringence

Not Available0.0040-0.0070

0 0.296

1.9 Clarity

Transparent

Color grading system

Crocoite and Emerald Optic Character

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

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Crocoite and Emerald Transparency

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