Gedrite and Prase Opal Optical Properties

Gedrite

Prase Opal

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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

Transparent, Translucent

1.5 Refractive Index

1.625-1.7181.370-1.470

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

Gedrite and Prase Opal Optic Character

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

Similar to their colors, Gedrite and Prase Opal 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.