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Moonstone
Moonstone

Opal
Opal



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Moonstone
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Opal

Moonstone and Opal Optical Properties

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1 Optical Properties
1.1 Luster
Pearly
Vitreous, Pearly
1.2 Pleochroism
AbsentWalter Schumann
None
1.3 Dispersion
Albite Optical ..
None
Rank: N/A (Overall)
None
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent, Transparent to translucent
Transparent, Translucent, Transparent to translucent
1.5 Refractive Index
1.518-1.527
1.37-1.52
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Trigonal
1.8 Birefringence
0.006-0.007
Not Available
1.9 Clarity
Transparent
Transparent

Moonstone and Opal Optic Character

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

Similar to their colors, Moonstone and Opal 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.