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Feldspar
Feldspar

Scapolite
Scapolite



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Feldspar
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Scapolite

Feldspar and Scapolite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Not Available
1.2 Pleochroism
None
Not Available
1.3 Dispersion
NA0.02
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.518-1.5701.540-1.579
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Triclinic or monoclinic
tetragonal
1.8 Birefringence
0.008-0.0100.006-0.037
Achroite
0 0.296
1.9 Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Feldspar and Scapolite Optic Character

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

Similar to their colors, Feldspar and Scapolite 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.