×

Benitoite
Benitoite

Tourmaline
Tourmaline



ADD
Compare
X
Benitoite
X
Tourmaline

Benitoite and Tourmaline Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
O = colorless; E = purple
typically moderate to strong
1.3 Dispersion
0.040.02
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
Transparent, Translucent, Transparent to opaque
1.5 Refractive Index
1.757-1.8041.614-1.666
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Hexagonal
Trigonal
1.8 Birefringence
0.0470.014-0.040
Achroite
0 0.296
1.9 Clarity
Transparent
Transparent

Benitoite and Tourmaline Optic Character

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

Benitoite and Tourmaline Transparency

Similar to their colors, Benitoite and Tourmaline 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, Benitoite is Transparent while Benitoite is Transparent in appearance.