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Rosasite
Rosasite

Powellite
Powellite



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Rosasite
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Powellite

Rosasite and Powellite Optical Properties

1 Optical Properties
1.1 Luster
Silky, Vitreous
Greasy, Subadamantine
1.2 Pleochroism
Strong: X = pale emerald green or colourless; Y = dark emerald green or pale blue; Z = dark emerald green or pale blue
In deeply colored specimens: blue greenAnthony et al
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Not Available
Transparent
1.5 Refractive Index
1.672-1.688
1.974-1.984
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Not Available
1.8 Birefringence
0.139-0.143
Not Available
1.9 Clarity
Not Available
Transparent

Rosasite and Powellite Optic Character

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

Rosasite and Powellite Transparency

Similar to their colors, Rosasite and Powellite 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, Rosasite is Not Available while Rosasite is Not Available in appearance.