×

Grossular
Grossular

Amethyst
Amethyst



ADD
Compare
X
Grossular
X
Amethyst

Grossular and Amethyst Optical Properties

Optical Properties

Luster

Greasy, Vitreous
Vitreous

Pleochroism

None
None

Dispersion

0.020.01
0.005 1
👆🏻

Transparency

-
Transparent, Transparent to translucent

Refractive Index

1.730-1.7601.544-1.553
1 3.25
👆🏻

Optic Character

-
-

Crystal System

cubic
Trigonal

Birefringence

0.0200.009
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Grossular and Amethyst Optic Character

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

Grossular and Amethyst Transparency

Similar to their colors, Grossular and Amethyst 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, Grossular is while Grossular is in appearance.