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Euclase
Euclase

Stichtite
Stichtite



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1 Optical Properties
1.1 Luster
Vitreous
Waxy, Resinous
1.2 Pleochroism
Weak: colorless-(greenish) yellow
Weak
1.3 Dispersion
0.02NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004) More from other references
Translucent
1.5 Refractive Index
1.650-1.6771.516-1.544
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a
Trigonal
1.8 Birefringence
0.019-0.0250.026
Achroite
0 0.296
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Translucent