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Ludlamite
Ludlamite

Amethyst
Amethyst



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Ludlamite
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Amethyst

Ludlamite and Amethyst Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly
Vitreous
1.2 Pleochroism
NilArthur Thomas
None
1.3 Dispersion
NA0.01
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004) More from other references
Transparent, Transparent to translucent
1.5 Refractive Index
1.653-1.6931.544-1.553
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Trigonal
1.8 Birefringence
0.038-0.0440.009
Achroite
0 0.296
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Ludlamite and Amethyst Optic Character

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

Ludlamite and Amethyst Transparency

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