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Danburite
Danburite

Staurolite
Staurolite



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Danburite
X
Staurolite

Danburite and Staurolite Optical Properties

Optical Properties

Luster

Vitreous, Greasy
Resinous

Pleochroism

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

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.627-1.6391.736-1.762
1 3.25
👆🏻

Optic Character

Biaxial/+
-

Crystal System

Orthorhombic
monoclinic

Birefringence

0.0060.009-0.015
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
-

Danburite and Staurolite Optic Character

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

Danburite and Staurolite Transparency

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