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Peridot
Peridot

Lazulite
Lazulite



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Peridot and Lazulite Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous, Greasy
Not Available
1.2 Pleochroism
Weak: yellow-green green (colorless)Herve Nicolas Lazzarelli
Transparent crystals show a strong pleochroism: colorless light blue dark (violet) blueHerve Nicolas Lazzarelli
1.3 Dispersion
Albite Optical ..
0.02
Rank: 18 (Overall)
0.01
Rank: 26 (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent
Transparent, Translucent
1.5 Refractive Index
1.64-1.69
1.604-1.646
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
monoclinic
1.8 Birefringence
0.036
0.031-0.036
1.9 Clarity
Transparent
Transparent

Peridot and Lazulite Optic Character

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

Peridot and Lazulite Transparency

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