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Mimetite
Mimetite

Spinel
Spinel



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Mimetite
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Spinel

Mimetite and Spinel Optical Properties

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1 Optical Properties
1.1 Luster
Resinous, Subadamantine
Vitreous
1.2 Pleochroism
Weak
Absent
1.3 Dispersion
NA0.02
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Transparent, Translucent, Transparent to translucent
1.5 Refractive Index
2.106-2.2631.73
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Hexagonal
Isometric
1.8 Birefringence
0.019Not Available
Achroite
0 0.296
1.9 Clarity
Translucent
TransparentUlrich Henn and Claudio C. Milisenda

Mimetite and Spinel Optic Character

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

Mimetite and Spinel Transparency

Similar to their colors, Mimetite and Spinel 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, Mimetite is Translucent while Mimetite is Translucent in appearance.