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Umbalite
Umbalite

Prase Opal
Prase Opal



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Umbalite
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Prase Opal

Umbalite and Prase Opal Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Not Available
1.2 Pleochroism
Not Available
Not Available
1.3 Dispersion
0.02NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
TransparentGemdat.org, Management Team (2012)
Transparent, Translucent
1.5 Refractive Index
1.730-1.8201.370-1.470
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Not Available
1.8 Birefringence
Not AvailableNot Available
Achroite
0 0.296
1.9 Clarity
TransparentGemdat.org
Transparent

Umbalite and Prase Opal Optic Character

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

Umbalite and Prase Opal Transparency

Similar to their colors, Umbalite and Prase Opal 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, Umbalite is Management Team (2012) and TransparentGemdat.org while Umbalite is Management Team (2012) and TransparentGemdat.org in appearance.