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Herderite
Herderite

Montebrasite
Montebrasite



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Herderite
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Montebrasite

Herderite and Montebrasite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Not Available
1.2 Pleochroism
Not Available
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
TransparentWalter Schumann, Gemstones of the world (2001) More from other references
1.5 Refractive Index
1.587-1.6421.578-1.646
Agate Opal
1 3.25
1.6 Optic Character
Biaxial/+
Not Available
1.7 Crystal System
monoclinic
Not Available
1.8 Birefringence
0.028-0.0320.020-0.030
Achroite
0 0.296
1.9 Clarity
Transparent
TransparentWalter Schumann

Herderite and Montebrasite Optic Character

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

Similar to their colors, Herderite and Montebrasite 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.