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Gedrite
Gedrite

Ludlamite
Ludlamite



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Ludlamite

Gedrite and Ludlamite Optical Properties

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1 Optical Properties
1.1 Luster
Fibrous, Vitreous
Vitreous, Pearly
1.2 Pleochroism
Weak to moderate
NilArthur Thomas
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.625-1.718
1.653-1.693
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
monoclinic
1.8 Birefringence
Not Available
0.038-0.044
1.9 Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Gedrite and Ludlamite Optic Character

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

Gedrite and Ludlamite Transparency

Similar to their colors, Gedrite and Ludlamite 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, Gedrite is Transparent while Gedrite is Transparent in appearance.