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Feldspar
Feldspar

Jasper
Jasper



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Feldspar
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Jasper

Feldspar and Jasper Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
None
AbsentWalter Schumann
1.3 Dispersion
NANone
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Opaque
1.5 Refractive Index
1.518-1.5701.540
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Triclinic or monoclinic
Trigonal
1.8 Birefringence
0.008-0.010Not Available
Achroite
0 0.296
1.9 Clarity
Transparent
OpaqueHerve Nicolas Lazzarelli

Feldspar and Jasper Optic Character

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

Feldspar and Jasper Transparency

Similar to their colors, Feldspar and Jasper 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, Feldspar is Translucent and Transparent while Feldspar is Translucent and Transparent in appearance.