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Bustamite
Bustamite

Beudantite
Beudantite



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Bustamite
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Beudantite

Bustamite and Beudantite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous, Resinous

Pleochroism

Weak
visible

Dispersion

0.020.03
0.005 1
👆🏻

Transparency

Transparent, Translucent
-

Refractive Index

1.662-1.7071.957
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Triclinic
Trigonal

Birefringence

0.013-0.0150.014
0 0.296
👆🏻

Clarity

Transparent
-

Bustamite and Beudantite Optic Character

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

Bustamite and Beudantite Transparency

Similar to their colors, Bustamite and Beudantite 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, Bustamite is Transparent and Translucent while Bustamite is Transparent and Translucent in appearance.