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Precious Opal
Precious Opal

Orthoclase
Orthoclase



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Precious Opal
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Orthoclase

Precious Opal and Orthoclase Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Vitreous, Pearly
1.2 Pleochroism
AbsentWalter Schumann
colorless.
1.3 Dispersion
Albite Optical ..
None
Rank: N/A (Overall)
0.01
Rank: 28 (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent, Translucent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.370-1.470
1.518-1.536
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
monoclinic
1.8 Birefringence
Not Available
0.0050-0.0060
1.9 Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Precious Opal and Orthoclase Optic Character

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

Precious Opal and Orthoclase Transparency

Similar to their colors, Precious Opal and Orthoclase 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, Precious Opal is Translucent and Transparent while Precious Opal is Translucent and Transparent in appearance.