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Staurolite
Staurolite

Chrysoberyl
Chrysoberyl



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X
Staurolite
X
Chrysoberyl

Staurolite and Chrysoberyl Optical Properties

Optical Properties

Luster

Resinous
Vitreous

Pleochroism

X = colorless; Y = pale yellow; Z = golden yellow
X = red; Y = yellow-orange; Z = emerald-green

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

-
Transparent, Translucent, Transparent to translucent

Refractive Index

1.736-1.7621.746-1.763
1 3.25
👆🏻

Optic Character

-
Biaxial/+

Crystal System

monoclinic
Orthorhombic

Birefringence

0.009-0.0150.007-0.013
0 0.296
👆🏻

Clarity

-
Transparent

Staurolite and Chrysoberyl Optic Character

Staurolite and Chrysoberyl optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Staurolite and Chrysoberyl 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 Staurolite and Chrysoberyl 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. Chrysoberyl has Biaxial/+ character.

Staurolite and Chrysoberyl Transparency

Similar to their colors, Staurolite and Chrysoberyl 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, Staurolite is while Staurolite is in appearance.