×

Oligoclase
Oligoclase

Feldspar
Feldspar



ADD
Compare
X
Oligoclase
X
Feldspar

Oligoclase and Feldspar Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
Not Available
None
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004)
Transparent, Translucent
1.5 Refractive Index
1.538-1.5501.518-1.570
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Triclinic or monoclinic
1.8 Birefringence
0.0100.008-0.010
Achroite
0 0.296
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Oligoclase and Feldspar Optic Character

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

Oligoclase and Feldspar Transparency

Similar to their colors, Oligoclase and Feldspar 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, Oligoclase is Gemmological Tables (2004) while Oligoclase is Gemmological Tables (2004) in appearance.