×

Sugilite
Sugilite

Beryl
Beryl



ADD
Compare
X
Sugilite
X
Beryl

Sugilite and Beryl Optical Properties

Add ⊕

Optical Properties

Luster

Vitreous
Vitreous, Resinous

Pleochroism

Weak
Weak to distinct

Dispersion

0.020.01
0.005 1
👆🏻

Transparency

Translucent
Transparent, Transparent to opaque

Refractive Index

1.607-1.6121.560-1.604
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
Hexagonal

Birefringence

0.0030.0040-0.0070
0 0.296
👆🏻

Clarity

Translucent
Transparent

Sugilite and Beryl Optic Character

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

Sugilite and Beryl Transparency

Similar to their colors, Sugilite and Beryl 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, Sugilite is Translucent while Sugilite is Translucent in appearance.