Gedrite and Pleonaste Optical Properties

Gedrite

Pleonaste

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1 Optical Properties

1.1 Luster

Fibrous, Vitreous

Not Available

1.2 Pleochroism

Weak to moderate

Not Available

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Transparent

Gemmological Tables (2004)

1.5 Refractive Index

1.625-1.7181.780

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma

Not Available

1.8 Birefringence

Not AvailableNot Available

0 0.296

1.9 Clarity

Transparent

Gemmological Tables (2004)

Gedrite and Pleonaste Optic Character

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

Similar to their colors, Gedrite and Pleonaste 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, Gedrite is Transparent while Gedrite is Transparent in appearance.