Schorl and Williamsite Optical Properties

Schorl

Williamsite

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1 Optical Properties

1.1 Luster

Vitreous

Waxy, Silky, Resinous, Greasy

1.2 Pleochroism

Very strong: yellow-brown pale yellow

Not Available

1.3 Dispersion

NANA

0.007 1

1.13 Transparency

Transparent, Translucent

TranslucentHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)

1.14 Refractive Index

1.635-1.6721.530-1.575

1 3.25

1.15 Optic Character

Not Available

1.16 Crystal System

Not Available

1.17 Birefringence

0.025Not Available

0 0.296

1.18 Clarity

Transparent

TranslucentHerve Nicolas Lazzarelli

Schorl and Williamsite Optic Character

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

Schorl Vs Snowflake Obsidian

Schorl Vs Triplite

Schorl Vs Xenotime

Schorl and Williamsite Transparency

Similar to their colors, Schorl and Williamsite 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.