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Shattuckite
Shattuckite

Alexandrite
Alexandrite



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Shattuckite
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Alexandrite

Shattuckite and Alexandrite Optical Properties

1 Optical Properties
1.1 Luster
Silky
Vitreous
1.2 Pleochroism
X = very pale blue; Y = pale blue; Z = deep blue
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Transparent, Transparent to nearly opaque
1.5 Refractive Index
1.752-1.8151.739-1.770
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Biaxial/+
1.7 Crystal System
Orthorhombic
Orthorhombic
1.8 Birefringence
0.0630.007-0.010
Achroite
0 0.296
1.9 Clarity
Translucent
Transparent

Shattuckite and Alexandrite Optic Character

Shattuckite and Alexandrite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Shattuckite and Alexandrite 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 Shattuckite and Alexandrite 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. Alexandrite has Biaxial/+ character.

Shattuckite and Alexandrite Transparency

Similar to their colors, Shattuckite and Alexandrite 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, Shattuckite is Translucent while Shattuckite is Translucent in appearance.