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Staurolite
Staurolite

Eudialyte
Eudialyte



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X
Staurolite
X
Eudialyte

Staurolite and Eudialyte Optical Properties

Optical Properties

Luster

Resinous
Vitreous

Pleochroism

X = colorless; Y = pale yellow; Z = golden yellow
Weak: O= colorless

Dispersion

0.020.01
0.005 1
👆🏻

Transparency

-
Translucent

Refractive Index

1.736-1.7621.591-1.633
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
Trigonal

Birefringence

0.009-0.0150.003-0.010
0 0.296
👆🏻

Clarity

-
Translucent

Staurolite and Eudialyte Optic Character

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

Staurolite and Eudialyte Transparency

Similar to their colors, Staurolite and Eudialyte 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.