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Prasiolite
Prasiolite

Sinhalite
Sinhalite



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Prasiolite
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Sinhalite

Prasiolite and Sinhalite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Not Available
1.2 Pleochroism
Very weak: light green pale greenWalter Schumann
Trichroism: green light brown dark brownHerve Nicolas Lazzarelli
1.3 Dispersion
0.010.02
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.544-1.5531.665-1.712
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Orthorhombic
1.8 Birefringence
0.0090.036-0.042
Achroite
0 0.296
1.9 Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Prasiolite and Sinhalite Optic Character

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

Prasiolite and Sinhalite Transparency

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