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Demantoid
Demantoid

Augelite
Augelite



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Demantoid
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Augelite

Demantoid and Augelite Optical Properties

1 Optical Properties
1.1 Luster
Adamantine
Pearly
1.2 Pleochroism
None
NilArthur Thomas
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004)
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.880-1.8901.570-1.591
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
cubic
1.8 Birefringence
Not Available0.020-0.021
Achroite
0 0.296
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
TransparentUlrich Henn and Claudio C. Milisenda

Demantoid and Augelite Optic Character

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

Similar to their colors, Demantoid and Augelite 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.