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Turquoise
Turquoise

Grandidierite
Grandidierite



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Turquoise
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Grandidierite

Turquoise and Grandidierite Optical Properties

1 Optical Properties
1.1 Luster
Waxy
Vitreous, Pearly
1.2 Pleochroism
Weak
visible
1.3 Dispersion
NoneNA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent, Opaque
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.610-1.6501.578-1.639
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Triclinic
Orthorhombic
1.8 Birefringence
0.0400.037-0.039
Achroite
0 0.296
1.9 Clarity
Translucent
Gemmological Tables (2004) More from other references

Turquoise and Grandidierite Optic Character

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

Turquoise and Grandidierite Transparency

Similar to their colors, Turquoise and Grandidierite 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, Turquoise is Opaque and Translucent while Turquoise is Opaque and Translucent in appearance.