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Vivianite
Vivianite

Chrysoprase
Chrysoprase



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Vivianite
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Chrysoprase

Vivianite and Chrysoprase Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly
Vitreous, Vitreous, Waxy
1.2 Pleochroism
Anomalous plechroism is strong with colours deep blue/pale yellowish green/yellowish green.Michael O’Donoghue
AbsentWalter Schumann
1.3 Dispersion
NANone
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
Translucent, Translucent, Opaque, Translucent to nearly opaque
1.5 Refractive Index
1.560-1.6401.530-1.543
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Trigonal
1.8 Birefringence
0.054-0.0750.004
Achroite
0 0.296
1.9 Clarity
Transparent
Translucent

Vivianite and Chrysoprase Optic Character

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

Vivianite and Chrysoprase Transparency

Similar to their colors, Vivianite and Chrysoprase 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, Vivianite is Transparent while Vivianite is Transparent in appearance.