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Rutile
Rutile

Danburite
Danburite



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Rutile
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Danburite

Rutile and Danburite Optical Properties

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Optical Properties

Luster

Adamantine
Vitreous, Greasy

Pleochroism

Weak to distinct brownish red-green-yellow
Weak: pale yellow yellow

Dispersion

0.330.02
0.005 1
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Transparency

Transparent, Translucent
-

Refractive Index

2.609-2.9031.627-1.639
1 3.25
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Optic Character

-
Biaxial/+

Crystal System

tetragonal
Orthorhombic

Birefringence

0.2960.006
0 0.296
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Clarity

Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Rutile and Danburite Optic Character

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

Rutile and Danburite Transparency

Similar to their colors, Rutile and Danburite 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, Rutile is Transparent and Translucent while Rutile is Transparent and Translucent in appearance.