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Grossular
Grossular

Proustite
Proustite



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Proustite

Grossular and Proustite Optical Properties

1 Optical Properties
1.1 Luster
Greasy, Vitreous
Adamantine
1.2 Pleochroism
None
Moderate; cochineal-red to blood-red
1.3 Dispersion
0.02NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004) More from other references
OpaqueUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) Rarely transparentMore from other references
1.5 Refractive Index
1.730-1.7602.792-3.087
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
cubic
Trigonal
1.8 Birefringence
0.0200.295-0.296
Achroite
0 0.296
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
OpaqueUlrich Henn and Claudio C. Milisenda

Grossular and Proustite Optic Character

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

Grossular and Proustite Transparency

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