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Blue spinel
Blue spinel

Almandine
Almandine



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Blue spinel
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Almandine

Blue spinel and Almandine Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Greasy, Vitreous
1.2 Pleochroism
Not Available
None
1.3 Dispersion
NA0.03
Fluorite Optical Properties
0.007 1
1.4 Transparency
Not Available
Gemmological Tables (2004) More from other references
1.5 Refractive Index
Not Available1.770-1.820
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
cubic
1.8 Birefringence
Not AvailableNot Available
Achroite
0 0.296
1.9 Clarity
Not Available
TransparentUlrich Henn and Claudio C. Milisenda

Blue spinel and Almandine Optic Character

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

Blue spinel and Almandine Transparency

Similar to their colors, Blue spinel and Almandine 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, Blue spinel is Not Available while Blue spinel is Not Available in appearance.