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Citrine
Citrine

Umbalite
Umbalite



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Citrine
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Umbalite

Citrine and Umbalite Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous
Not Available
1.2 Pleochroism
Natural: weak; yellow light yellow.
Not Available
1.3 Dispersion
0.010.02
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
TransparentGemdat.org, Management Team (2012)
1.5 Refractive Index
1.544-1.5531.730-1.820
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Not Available
1.8 Birefringence
0.009Not Available
Achroite
0 0.296
1.9 Clarity
Transparent
TransparentGemdat.org

Citrine and Umbalite Optic Character

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

Citrine and Umbalite Transparency

Similar to their colors, Citrine 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, Citrine is Transparent while Citrine is Transparent in appearance.