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Bustamite
Bustamite

Dioptase
Dioptase



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Bustamite
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Dioptase

Bustamite and Dioptase Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
Weak
Weak; dark emerald green
1.3 Dispersion
NA0.04
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
TranslucentHerve Nicolas Lazzarelli
1.5 Refractive Index
1.662-1.7071.644-1.720
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Triclinic
Trigonal
1.8 Birefringence
0.013-0.0150.051-0.053
Achroite
0 0.296
1.9 Clarity
Transparent
TranslucentHerve Nicolas Lazzarelli

Bustamite and Dioptase Optic Character

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

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