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Unakite
Unakite

Topaz
Topaz



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Unakite
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Topaz

Unakite and Topaz Optical Properties

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1 Optical Properties
1.1 Luster
Not Available
Vitreous
1.2 Pleochroism
Not Available
Weak
1.3 Dispersion
NA0.01
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemstones of the world (2001)
Transparent
1.5 Refractive Index
1.5251.606-1.644
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Orthorhombic
1.8 Birefringence
Not Available0.008-0.011
Achroite
0 0.296
1.13 Clarity
Gemstones of the world (2001)
TransparentUlrich Henn and Claudio C. Milisenda

Unakite and Topaz Optic Character

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

Unakite and Topaz Transparency

Similar to their colors, Unakite and Topaz 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, Unakite is Gemstones of the world (2001) while Unakite is Gemstones of the world (2001) in appearance.