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Bustamite
Bustamite

Verdelite
Verdelite



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Bustamite
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Verdelite

Bustamite and Verdelite Optical Properties

Optical Properties

Luster

Vitreous
-

Pleochroism

Weak
Strong: dark green yellow

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

Transparent, Translucent
Transparent, Translucent

Refractive Index

1.662-1.7071.614-1.666
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Triclinic
-

Birefringence

0.013-0.0150.014-0.040
0 0.296
👆🏻

Clarity

Transparent
Transparent

Bustamite and Verdelite Optic Character

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

Similar to their colors, Bustamite and Verdelite 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.