Super Seven Crystals and Biotite Optical Properties

Super Seven Crystals

Biotite

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Optical Properties

Luster

Vitreous, Pearly, Silky

Vitreous, Pearly

Pleochroism

Strong

Dispersion

0.03-

0.005 1

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Transparency

Transparent, Translucent, Opaque

Refractive Index

1.519-1.5211.565-1.625

1 3.25

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Optic Character

Crystal System

monoclinic

Birefringence

0.0090-0.01000.03-0.07

0 0.296

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Clarity

Super Seven Crystals and Biotite Optic Character

Super Seven Crystals and Biotite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Super Seven Crystals and Biotite 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 Super Seven Crystals and Biotite 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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Super Seven Crystals and Biotite Transparency

Similar to their colors, Super Seven Crystals and Biotite 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, Super Seven Crystals is Transparent, Translucent and Opaque while Super Seven Crystals is Transparent, Translucent and Opaque in appearance.