Diamond and Staurolite Optical Properties

Diamond

Staurolite

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Optical Properties

Luster

Adamantine

Resinous

Pleochroism

None

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

Dispersion

0.040.02

0.005 1

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Transparency

Transparent, Translucent, Transparent to opaque

Refractive Index

2.417-2.4191.736-1.762

1 3.25

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Optic Character

Crystal System

cubic

monoclinic

Birefringence

-99990.009-0.015

0 0.296

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Clarity

Transparent

Diamond and Staurolite Optic Character

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

Similar to their colors, Diamond 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, Diamond is Transparent, Translucent and Transparent to opaque while Diamond is Transparent, Translucent and Transparent to opaque in appearance.