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Pyrope
Pyrope

Staurolite
Staurolite



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Pyrope
X
Staurolite

Pyrope and Staurolite Optical Properties

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Optical Properties

Luster

Greasy, Vitreous
Resinous

Pleochroism

None
X = colorless; Y = pale yellow; Z = golden yellow

Dispersion

0.020.02
0.005 1
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Transparency

-
-

Refractive Index

1.720-1.7561.736-1.762
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

TransparentUlrich Henn and Claudio C. Milisenda
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Pyrope and Staurolite Optic Character

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

Pyrope and Staurolite Transparency

Similar to their colors, Pyrope 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, Pyrope is while Pyrope is in appearance.