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Mottramite
Mottramite

Girasol
Girasol



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Mottramite
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Girasol

Mottramite and Girasol Optical Properties

Optical Properties

Luster

Greasy
-

Pleochroism

Visible X=Y= canary yellow to greenish yellow
-

Dispersion

0.040.01
0.005 1
👆🏻

Transparency

-
Transparent

Refractive Index

2.1701.37-1.52
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
-

Birefringence

0.150-9999
0 0.296
👆🏻

Clarity

-
Transparent

Mottramite and Girasol Optic Character

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

Similar to their colors, Mottramite and Girasol 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.