Williamsite and Staurolite Optical Properties

Williamsite

Staurolite

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1 Optical Properties

1.1 Luster

Waxy, Silky, Resinous, Greasy

Resinous

1.2 Pleochroism

Not Available

X = colorless; Y = pale yellow; Z = golden yellow

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

TranslucentHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)

Blue Chart Gem Identification (2010) More from other references

1.5 Refractive Index

1.530-1.5751.736-1.762

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

monoclinic

1.8 Birefringence

Not Available0.009-0.015

0 0.296

1.9 Clarity

TranslucentHerve Nicolas Lazzarelli

Blue Chart Gem Identification (2010) More from other references

Williamsite and Staurolite Optic Character

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

Similar to their colors, Williamsite and Staurolite 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, Williamsite is Blue Chart Gem Identification (2010) and TranslucentHerve Nicolas Lazzarelli while Williamsite is Blue Chart Gem Identification (2010) and TranslucentHerve Nicolas Lazzarelli in appearance.