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Bastnasite
Bastnasite

Shattuckite
Shattuckite



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Bastnasite
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Shattuckite

Bastnasite and Shattuckite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Greasy, Pearly
Silky
1.2 Pleochroism
Faint
X = very pale blue; Y = pale blue; Z = deep blue
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004) More from other references
Translucent
1.5 Refractive Index
1.717-1.7221.752-1.815
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Hexagonal
Orthorhombic
1.8 Birefringence
0.1000.063
Achroite
0 0.296
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Translucent

Bastnasite and Shattuckite Optic Character

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

Similar to their colors, Bastnasite and Shattuckite 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.