Schorl and Poldervaartite Optical Properties

Schorl

Poldervaartite

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1 Optical Properties

1.1 Luster

Vitreous

1.2 Pleochroism

Very strong: yellow-brown pale yellow

Weak: colorless light gray bluish grayAnthony et al

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Transparent, Translucent

Transparent

1.5 Refractive Index

1.635-1.6721.634-1.656

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

1.8 Birefringence

0.025Not Available

0 0.296

1.9 Clarity

Transparent

Schorl and Poldervaartite Optic Character

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

Similar to their colors, Schorl and Poldervaartite 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, Schorl is Translucent and Transparent while Schorl is Translucent and Transparent in appearance.