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Cinnabar
Cinnabar

Sphene
Sphene



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Cinnabar
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Sphene

Cinnabar and Sphene Optical Properties

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1 Optical Properties
1.1 Luster
Adamantine
Not Available
1.2 Pleochroism
NilArthur Thomas
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Not Available
1.5 Refractive Index
2.905-3.251.84-2.11
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
monoclinic
1.8 Birefringence
Not AvailableNot Available
Achroite
0 0.296
1.9 Clarity
Translucent
Color grading system

Cinnabar and Sphene Optic Character

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

Cinnabar and Sphene Transparency

Similar to their colors, Cinnabar and Sphene 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, Cinnabar is Translucent while Cinnabar is Translucent in appearance.