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Demantoid Garnet
Demantoid Garnet

Purpurite
Purpurite



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Demantoid Garnet
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Purpurite

Demantoid Garnet and Purpurite Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Not Available
1.2 Pleochroism
Not Available
StrongArthur Thomas
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Not Available
TranslucentWalter Schumann, Gemstones of the world (2001) More from other references
1.5 Refractive Index
1.88-1.891.85-1.92
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Isometric
Orthorhombic
1.8 Birefringence
Not Available0.070
Achroite
0 0.296
1.9 Clarity
Color grading system
TranslucentWalter Schumann

Demantoid Garnet and Purpurite Optic Character

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

Similar to their colors, Demantoid Garnet and Purpurite 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 Garnet is Not Available while Demantoid Garnet is Not Available in appearance.