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Villiaumite
Villiaumite

Andradite Garnet
Andradite Garnet



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Villiaumite
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Andradite Garnet

Villiaumite and Andradite Garnet Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Adamantine
1.2 Pleochroism
Yellow to pink/deep carmineMichael O’Donoghue
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004) More from other references
Transparent, Opaque, Transparent to opaque
1.5 Refractive Index
1.328-1.3321.888-1.889
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Isometric
1.8 Birefringence
Not AvailableNot Available
Achroite
0 0.296
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent to opaque

Villiaumite and Andradite Garnet Optic Character

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

Villiaumite and Andradite Garnet Transparency

Similar to their colors, Villiaumite and Andradite Garnet 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, Villiaumite is Gemmological Tables (2004) More from other references while Villiaumite is Gemmological Tables (2004) More from other references in appearance.