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Demantoid
Demantoid

Ammolite
Ammolite



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Demantoid
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Ammolite

Demantoid and Ammolite Optical Properties

1 Optical Properties
1.1 Luster
Adamantine
Silky, Vitreous
1.2 Pleochroism
None
None
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004)
Not Available
1.5 Refractive Index
1.880-1.8901.520-1.670
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
cubic
Trigonal
1.8 Birefringence
Not Available0.135-0.145
Achroite
0 0.296
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Not Available

Demantoid and Ammolite Optic Character

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

Demantoid and Ammolite Transparency

Similar to their colors, Demantoid and Ammolite 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, Demantoid is Gemmological Tables (2004) while Demantoid is Gemmological Tables (2004) in appearance.