×

Moonstone
Moonstone

Dravite
Dravite



ADD
Compare
X
Moonstone
X
Dravite

Moonstone and Dravite Optical Properties

Add ⊕

Optical Properties

Luster

Pearly
Vitreous

Pleochroism

-
Very strong: pale yellow colorless

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

Transparent, Transparent to translucent
Transparent

Refractive Index

1.518-1.5271.614-1.666
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m

Birefringence

0.006-0.0070.014-0.032
0 0.296
👆🏻

Clarity

Transparent
Transparent

Moonstone and Dravite Optic Character

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

Moonstone and Dravite Transparency

Similar to their colors, Moonstone and Dravite 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, Moonstone is Transparent and Transparent to translucent while Moonstone is Transparent and Transparent to translucent in appearance.