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Ludlamite
Ludlamite

Rosasite
Rosasite



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Ludlamite
X
Rosasite

Ludlamite and Rosasite Optical Properties

Optical Properties

Luster

Vitreous, Pearly
Silky, Vitreous

Pleochroism

-
Strong: X = pale emerald green or colourless; Y = dark emerald green or pale blue; Z = dark emerald green or pale blue

Dispersion

0.020.03
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.653-1.6931.672-1.688
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
monoclinic

Birefringence

0.038-0.0440.139-0.143
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
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Ludlamite and Rosasite Optic Character

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

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