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Peridot
Peridot

Sinhalite
Sinhalite



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Peridot and Sinhalite 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
Trichroism: green light brown dark brownHerve Nicolas Lazzarelli
1.3 Dispersion
Albite Optical ..
0.02
Rank: 18 (Overall)
0.02
Rank: 21 (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.64-1.69
1.665-1.712
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Orthorhombic
1.8 Birefringence
0.036
0.036-0.042
1.9 Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Peridot and Sinhalite Optic Character

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

Similar to their colors, Peridot and Sinhalite 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.