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Mottramite
Mottramite

Lepidolite
Lepidolite



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Mottramite
X
Lepidolite

Mottramite and Lepidolite Optical Properties

Optical Properties

Luster

Greasy
Vitreous, Pearly

Pleochroism

Visible X=Y= canary yellow to greenish yellow
X = almost colorless; Y = Z = pink

Dispersion

0.040.01
0.005 1
👆🏻

Transparency

-
Transparent

Refractive Index

2.1701.525-1.587
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Triclinic

Birefringence

0.1500.0290-0.0380
0 0.296
👆🏻

Clarity

-
Transparent

Mottramite and Lepidolite Optic Character

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

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