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Benitoite
Benitoite

Dioptase
Dioptase



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Benitoite
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Dioptase

Benitoite and Dioptase Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
O = colorless; E = purple
Weak; dark emerald green
1.3 Dispersion
0.040.04
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
TranslucentHerve Nicolas Lazzarelli
1.5 Refractive Index
1.757-1.8041.644-1.720
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Hexagonal
Trigonal
1.8 Birefringence
0.0470.051-0.053
Achroite
0 0.296
1.9 Clarity
Transparent
TranslucentHerve Nicolas Lazzarelli

Benitoite and Dioptase Optic Character

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

Benitoite and Dioptase Transparency

Similar to their colors, Benitoite 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, Benitoite is Transparent while Benitoite is Transparent in appearance.