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Prasiolite
Prasiolite

Watermelon Tourmaline
Watermelon Tourmaline



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Prasiolite
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Watermelon Tourmaline

Prasiolite and Watermelon Tourmaline Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
Very weak: light green pale greenWalter Schumann
Not Available
1.3 Dispersion
0.010.02
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
TransparentGemdat.org, Management Team (2012)
1.5 Refractive Index
1.544-1.5531.614-1.666
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Not Available
1.8 Birefringence
0.0090.014-0.040
Achroite
0 0.296
1.9 Clarity
Transparent
TransparentGemdat.org

Prasiolite and Watermelon Tourmaline Optic Character

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

Similar to their colors, Prasiolite and Watermelon Tourmaline 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.