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Umbalite
Umbalite
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Umbalite and Tanzanite Optical Properties

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1 Optical Properties
1.1 Luster
Not Available
Vitreous
1.2 Pleochroism
Not Available
Present
1.3 Dispersion
Albite Optical ..
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â–¶
â–¼
0.02
Rank: 16 (Overall)â–¶
0.03
Rank: 14 (Overall)â–¶
â–²
Fluorite Optical Properties
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1.4 Transparency
TransparentGemdat.org, Management Team (2012)
Transparent, Translucent, Transparent to translucent
1.5 Refractive Index
1.730-1.820
1.685-1.707
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Orthorhombic
1.8 Birefringence
Not Available
0.006-0.018
1.9 Clarity
TransparentGemdat.org
TransparentUlrich Henn and Claudio C. Milisenda

Umbalite and Tanzanite Optic Character

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

Similar to their colors, Umbalite and Tanzanite 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.

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