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Bastnasite

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Bastnasite and Sapphire Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Greasy, Pearly
Vitreous, Adamantine, Vitreous, Adamantine
1.2 Pleochroism
Faint
Strong
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
0.02
Rank: 21 (Overall)
Fluorite Optical Properties
1.4 Transparency
Gemmological Tables (2004) More from other references
Transparent, Translucent, Transparent to opaque
1.5 Refractive Index
1.717-1.722
1.762-1.788
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Hexagonal
Trigonal
1.8 Birefringence
0.100
0.008-0.009
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Bastnasite and Sapphire Optic Character

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

Bastnasite and Sapphire Transparency

Similar to their colors, Bastnasite and Sapphire 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, Bastnasite is Gemmological Tables (2004) More from other references while Bastnasite is Gemmological Tables (2004) More from other references in appearance.