×

Herderite
Herderite

Tourmaline
Tourmaline



ADD
Compare
X
Herderite
X
Tourmaline

Herderite and Tourmaline Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
Not Available
typically moderate to strong
1.3 Dispersion
NA0.02
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
Transparent, Translucent, Transparent to opaque
1.5 Refractive Index
1.587-1.6421.614-1.666
Agate Opal
1 3.25
1.6 Optic Character
Biaxial/+
Not Available
1.7 Crystal System
monoclinic
Trigonal
1.8 Birefringence
0.028-0.0320.014-0.040
Achroite
0 0.296
1.9 Clarity
Transparent
Transparent

Herderite and Tourmaline Optic Character

Herderite and Tourmaline optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Herderite 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 Herderite 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. Herderite has Biaxial/+ character.

Herderite and Tourmaline Transparency

Similar to their colors, Herderite 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, Herderite is Transparent while Herderite is Transparent in appearance.