Verdite and Cordierite Optical Properties

Verdite

Cordierite

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1 Optical Properties

1.1 Luster

Vitreous, Silky

Greasy, Vitreous

1.2 Pleochroism

Extreme

X = pale yellow

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Translucent

Not Available

1.5 Refractive Index

1.580Not Available

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/c

Orthorhombic

1.8 Birefringence

Not AvailableNot Available

0 0.296

1.9 Clarity

Translucent

Not Available

Verdite and Cordierite Optic Character

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

Similar to their colors, Verdite and Cordierite 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, Verdite is Translucent while Verdite is Translucent in appearance.