×

Zoisite
Zoisite

Tantalite
Tantalite



ADD
Compare
X
Zoisite
X
Tantalite

Zoisite and Tantalite Optical Properties

Add ⊕
1 Optical Properties
1.1 Luster
Vitreous
Resinous
1.2 Pleochroism
X = pale pink to red-violet; Y = nearly colorless to bright pink or deep blue; Z = pale yellow to yellow-green
Not Available
1.3 Dispersion
0.02NA
Fluorite Optical Properties
0.007 1
1.6 Transparency
Transparent, Translucent, Opaque . May be translucent in thin backlit sections.
TransparentWalter Schumann, Gemstones of the world (2001) More from other references
1.7 Refractive Index
1.685-1.7072.190-2.457
Agate Opal
1 3.25
1.11 Optic Character
Not Available
Not Available
1.12 Crystal System
Orthorhombic
Orthorhombic
1.13 Birefringence
0.006-0.0180.083
Achroite
0 0.296
1.15 Clarity
Transparent
TransparentWalter Schumann

Zoisite and Tantalite Optic Character

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

Zoisite and Tantalite Transparency

Similar to their colors, Zoisite and Tantalite 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, Zoisite is Opaque . May be translucent in thin backlit sections., Translucent and Transparent while Zoisite is Opaque . May be translucent in thin backlit sections., Translucent and Transparent in appearance.