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Brookite
Brookite

Staurolite
Staurolite



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X
Brookite
X
Staurolite

Brookite and Staurolite Optical Properties

Optical Properties

Luster

Adamantine
Resinous

Pleochroism

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

Dispersion

0.200.02
0.005 1
👆🏻

Transparency

-
-

Refractive Index

2.583-2.7411.736-1.762
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
monoclinic

Birefringence

0.1170.009-0.015
0 0.296
👆🏻

Clarity

-
-

Brookite and Staurolite Optic Character

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

Brookite and Staurolite Transparency

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