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Crocoite
Crocoite

Tantalite
Tantalite



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Crocoite
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Tantalite

Crocoite and Tantalite Optical Properties

1 Optical Properties
1.1 Luster
Adamantine
Resinous
1.2 Pleochroism
Distinctly trichroic
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
2.31-2.662.190-2.457
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/n
Orthorhombic
1.8 Birefringence
Not Available0.083
Achroite
0 0.296
1.9 Clarity
Transparent
TransparentWalter Schumann

Crocoite and Tantalite Optic Character

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

Crocoite and Tantalite Transparency

Similar to their colors, Crocoite and Tantalite 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, Crocoite is Transparent while Crocoite is Transparent in appearance.