Tourmaline and Hypersthene Optical Properties

Tourmaline

Hypersthene

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1 Optical Properties

1.1 Luster

Vitreous

Vitreous, Pearly

1.2 Pleochroism

typically moderate to strong

Green stones strong: (dark) bluish-green brownish-red (yellowish)Herve Nicolas Lazzarelli

1.3 Dispersion

Albite Optical ..

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0.02

Rank: 22 (Overall)▶

Not Available

Rank: N/A (Overall)▶

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Fluorite Optical Properties

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0.044 (Anglesite Opt..)

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1.4 Transparency

Transparent, Translucent, Transparent to opaque

Transparent, Translucent

1.5 Refractive Index

1.614-1.666

1.673-1.731

1.6 Optic Character

Not Available

1.7 Crystal System

Trigonal

Orthorhombic

1.8 Birefringence

0.014-0.040

0.016

1.9 Clarity

Transparent

Tourmaline and Hypersthene Optic Character

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

Compare Semi Precious Gemstones

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Tourmaline and Hypersthene Transparency

Similar to their colors, Tourmaline and Hypersthene 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, Tourmaline is Translucent, Transparent and Transparent to opaque while Tourmaline is Translucent, Transparent and Transparent to opaque in appearance.

Semi Precious

Turquoise

Peridot

Lehsunia

Alexandrite

Amethyst

Beryl