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Lazulite
Lazulite

Unakite
Unakite



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Lazulite
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Unakite

Lazulite and Unakite Optical Properties

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1 Optical Properties
1.1 Luster
Not Available
Not Available
1.2 Pleochroism
Transparent crystals show a strong pleochroism: colorless light blue dark (violet) blueHerve Nicolas Lazzarelli
Not Available
1.3 Dispersion
0.01NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Gemstones of the world (2001)
1.5 Refractive Index
1.604-1.6461.525
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
monoclinic
1.8 Birefringence
0.031-0.036Not Available
Achroite
0 0.296
1.9 Clarity
Transparent
Gemstones of the world (2001)

Lazulite and Unakite Optic Character

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

Lazulite and Unakite Transparency

Similar to their colors, Lazulite and Unakite 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, Lazulite is Translucent and Transparent while Lazulite is Translucent and Transparent in appearance.