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Demantoid
Demantoid

Ammonite
Ammonite



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Demantoid
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Ammonite

Demantoid and Ammonite Optical Properties

1 Optical Properties
1.1 Luster
Adamantine
Not Available
1.2 Pleochroism
None
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004)
Not Available
1.5 Refractive Index
1.880-1.890Not Available
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
cubic
Trigonal
1.8 Birefringence
Not AvailableNot Available
Achroite
0 0.296
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Not Available

Demantoid and Ammonite Optic Character

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

Similar to their colors, Demantoid and Ammonite 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.