Colemanite and Ekanite Optical Properties

Colemanite

Ekanite

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1 Optical Properties

1.1 Luster

Vitreous

1.2 Pleochroism

NilArthur Thomas

Not Available

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Transparent

1.5 Refractive Index

1.584-1.6151.593-1.596

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

Tetragonal Trapezohedral H-M Symbol (4 2 2) Space Group: I 422

1.8 Birefringence

0.028-0.0300.001

0 0.296

1.9 Clarity

Transparent

Colemanite and Ekanite Optic Character

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

Similar to their colors, Colemanite and Ekanite 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.