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Euclase
Euclase

Apophyllite
Apophyllite



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Euclase
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Apophyllite

Euclase and Apophyllite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous, Pearly
1.2 Pleochroism
Weak: colorless-(greenish) yellow
Dichroic (colorless)
1.3 Dispersion
0.02NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004) More from other references
Transparent, Translucent
1.5 Refractive Index
1.650-1.6771.530-1.543
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Uniaxial/-
1.7 Crystal System
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a
tetragonal
1.8 Birefringence
0.019-0.0250.000-0.003
Achroite
0 0.296
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Euclase and Apophyllite Optic Character

Euclase and Apophyllite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Euclase and Apophyllite 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 Euclase and Apophyllite 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. Apophyllite has Uniaxial/- character.

Euclase and Apophyllite Transparency

Similar to their colors, Euclase and Apophyllite 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, Euclase is Gemmological Tables (2004) More from other references while Euclase is Gemmological Tables (2004) More from other references in appearance.