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Mottramite
Mottramite

Ludlamite
Ludlamite



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Mottramite
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Ludlamite

Mottramite and Ludlamite Optical Properties

1 Optical Properties
1.1 Luster
Greasy
Vitreous, Pearly
1.2 Pleochroism
Visible X=Y= canary yellow to greenish yellow
NilArthur Thomas
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Not Available
Gemmological Tables (2004) More from other references
1.5 Refractive Index
2.1701.653-1.693
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
monoclinic
1.8 Birefringence
0.1500.038-0.044
Achroite
0 0.296
1.9 Clarity
Not Available
TransparentUlrich Henn and Claudio C. Milisenda

Mottramite and Ludlamite Optic Character

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

Mottramite and Ludlamite Transparency

Similar to their colors, Mottramite 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, Mottramite is Not Available while Mottramite is Not Available in appearance.