Chrysoprase and Watermelon Tourmaline Optical Properties

Chrysoprase

Watermelon Tourmaline

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1 Optical Properties

1.1 Luster

Vitreous, Vitreous, Waxy

Vitreous

1.2 Pleochroism

AbsentWalter Schumann

Not Available

1.3 Dispersion

None0.02

0.007 1

1.4 Transparency

Translucent, Translucent, Opaque, Translucent to nearly opaque

TransparentGemdat.org, Management Team (2012)

1.5 Refractive Index

1.530-1.5431.614-1.666

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Trigonal

Not Available

1.8 Birefringence

0.0040.014-0.040

0 0.296

1.9 Clarity

Translucent

TransparentGemdat.org

Chrysoprase and Watermelon Tourmaline Optic Character

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

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Chrysoprase and Watermelon Tourmaline Transparency

Similar to their colors, Chrysoprase 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, Chrysoprase is Opaque, Translucent, Translucent and Translucent to nearly opaque while Chrysoprase is Opaque, Translucent, Translucent and Translucent to nearly opaque in appearance.