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Moonstone
Moonstone

Grandidierite
Grandidierite



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Grandidierite

Moonstone and Grandidierite Optical Properties

1 Optical Properties
1.1 Luster
Pearly
Vitreous, Pearly
1.2 Pleochroism
AbsentWalter Schumann
visible
1.3 Dispersion
Albite Optical ..
None
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent, Transparent to translucent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.518-1.527
1.578-1.639
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Orthorhombic
1.8 Birefringence
0.006-0.007
0.037-0.039
1.9 Clarity
Transparent
Gemmological Tables (2004) More from other references

Moonstone and Grandidierite Optic Character

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

Moonstone and Grandidierite Transparency

Similar to their colors, Moonstone 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, Moonstone is Transparent and Transparent to translucent while Moonstone is Transparent and Transparent to translucent in appearance.