×

Gedrite
Gedrite

Opal
Opal



ADD
Compare
X
Gedrite
X
Opal

Gedrite and Opal Optical Properties

Add ⊕

Optical Properties

Luster

Vitreous
Vitreous, Pearly

Pleochroism

Weak to moderate
None

Dispersion

0.020.01
0.005 1
👆🏻

Transparency

Transparent
Transparent, Translucent, Transparent to translucent

Refractive Index

1.625-1.7181.37-1.52
1 3.25
👆🏻

Optic Character

-
-

Crystal System

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

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

Transparent
Transparent

Gedrite and Opal Optic Character

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

Gedrite and Opal Transparency

Similar to their colors, Gedrite and 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.