×

Amethyst
Amethyst

Andradite
Andradite



ADD
Compare
X
Amethyst
X
Andradite

Amethyst and Andradite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Adamantine, Resinous
1.2 Pleochroism
None
Not Available
1.3 Dispersion
0.010.06
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Transparent to translucent
Transparent
1.5 Refractive Index
1.544-1.5531.88-1.94
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
cubic
1.8 Birefringence
0.0090.057
Achroite
0 0.296
1.9 Clarity
Transparent
Transparent

Amethyst and Andradite Optic Character

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

Amethyst and Andradite Transparency

Similar to their colors, Amethyst and Andradite 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, Amethyst is Transparent and Transparent to translucent while Amethyst is Transparent and Transparent to translucent in appearance.