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Moonstone
Moonstone

Umbalite
Umbalite



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Moonstone
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Umbalite

Moonstone and Umbalite Optical Properties

1 Optical Properties
1.1 Luster
Pearly
Not Available
1.2 Pleochroism
AbsentWalter Schumann
Not Available
1.3 Dispersion
None0.02
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Transparent to translucent
TransparentGemdat.org, Management Team (2012)
1.5 Refractive Index
1.518-1.5271.730-1.820
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Not Available
1.8 Birefringence
0.006-0.007Not Available
Achroite
0 0.296
1.9 Clarity
Transparent
TransparentGemdat.org

Moonstone and Umbalite Optic Character

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

Moonstone and Umbalite Transparency

Similar to their colors, Moonstone and Umbalite 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, Moonstone is Transparent and Transparent to translucent while Moonstone is Transparent and Transparent to translucent in appearance.