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Pearl and Tantalite Optical Properties

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1 Optical Properties
1.1 Luster
Pearly
Resinous
1.2 Pleochroism
AbsentWalter Schumann
Not Available
1.3 Dispersion
Albite Optical ..
None
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Translucent, Opaque
TransparentWalter Schumann, Gemstones of the world (2001) More from other references
1.5 Refractive Index
1.52-1.66
2.190-2.457
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Orthorhombic
1.8 Birefringence
0.156
0.083
1.9 Clarity
Translucent
TransparentWalter Schumann

Pearl and Tantalite Optic Character

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

Pearl and Tantalite Transparency

Similar to their colors, Pearl 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, Pearl is Opaque and Translucent while Pearl is Opaque and Translucent in appearance.