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Polyhalite
Polyhalite

Star Sapphire
Star Sapphire



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Polyhalite
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Star Sapphire

Polyhalite and Star Sapphire Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Resinous
Not Available
1.2 Pleochroism
Not Available
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Not Available
Transparent, Translucent
1.5 Refractive Index
1.546-1.5481.758-1.780
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Triclinic
Not Available
1.8 Birefringence
0.0210.007-0.010
Achroite
0 0.296
1.9 Clarity
Not Available
Transparent

Polyhalite and Star Sapphire Optic Character

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

Polyhalite and Star Sapphire Transparency

Similar to their colors, Polyhalite and Star Sapphire 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, Polyhalite is Not Available while Polyhalite is Not Available in appearance.