Colemanite and Crocoite Optical Properties

Colemanite

Crocoite

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1 Optical Properties

1.1 Luster

Vitreous

Adamantine

1.2 Pleochroism

NilArthur Thomas

Distinctly trichroic

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Transparent

1.5 Refractive Index

1.584-1.6152.31-2.66

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

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

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

1.8 Birefringence

0.028-0.030Not Available

0 0.296

1.9 Clarity

Transparent

Colemanite and Crocoite Optic Character

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

Compare Colorless Gems

Colemanite Vs Diaspore

Colemanite Vs Cubic Zirconia

Colemanite Vs Datolite

Colemanite and Crocoite Transparency

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