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Prasiolite
Prasiolite

Staurolite
Staurolite



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Prasiolite
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Staurolite

Prasiolite and Staurolite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Resinous
1.2 Pleochroism
Very weak: light green pale greenWalter Schumann
X = colorless; Y = pale yellow; Z = golden yellow
1.3 Dispersion
0.01NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Blue Chart Gem Identification (2010) More from other references
1.5 Refractive Index
1.544-1.5531.736-1.762
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
monoclinic
1.8 Birefringence
0.0090.009-0.015
Achroite
0 0.296
1.9 Clarity
Transparent
Blue Chart Gem Identification (2010) More from other references

Prasiolite and Staurolite Optic Character

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

Prasiolite and Staurolite Transparency

Similar to their colors, Prasiolite and Staurolite 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, Prasiolite is Translucent and Transparent while Prasiolite is Translucent and Transparent in appearance.