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Staurolite
Staurolite

Sunstone
Sunstone



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Staurolite
X
Sunstone

Staurolite and Sunstone Optical Properties

Optical Properties

Luster

Resinous
Vitreous

Pleochroism

X = colorless; Y = pale yellow; Z = golden yellow
Weak or absentWalter Schumann

Dispersion

0.020.01
0.005 1
👆🏻

Transparency

-
Transparent, Translucent, Transparent to translucent

Refractive Index

1.736-1.7621.53-1.55
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
Triclinic

Birefringence

0.009-0.0150.007-0.010
0 0.296
👆🏻

Clarity

-
Transparent to translucent

Staurolite and Sunstone Optic Character

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

Similar to their colors, Staurolite and Sunstone 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.