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Pyrope Spessartine
Pyrope Spessartine

Mottramite
Mottramite



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Pyrope Spessartine
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Mottramite

Pyrope Spessartine and Mottramite Optical Properties

Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
-
-
0.02
-
1.730-1.820
-
-
0.027
TransparentUlrich Henn and Claudio C. Milisenda
 
Greasy
Visible X=Y= canary yellow to greenish yellow
0.04
-
2.170
-
Orthorhombic
0.150
-

Pyrope Spessartine and Mottramite Optic Character

Pyrope Spessartine and Mottramite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Pyrope Spessartine Vs Mottramite 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 Pyrope Spessartine and Mottramite 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.

Pyrope Spessartine and Mottramite Transparency

Similar to their colors, Pyrope Spessartine and Mottramite 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, Pyrope Spessartine is while Pyrope Spessartine is in appearance.