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Emerald
Emerald
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Star Sapphire
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Emerald and Star Sapphire Optical Properties
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1 Optical Properties
1.1 Luster
Vitreous
Not Available
1.2 Pleochroism
Strong dichroism: yellow green Lazzarelli
Not Available
1.3 Dispersion
Albite Optical ..
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0.01
Rank: 26 (Overall)▶
Not Available
Rank: N/A (Overall)▶
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Fluorite Optical Properties
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1.4 Transparency
Transparent, Translucent, Transparent to translucent
Transparent, Translucent
1.5 Refractive Index
1.565-1.602
1.758-1.780
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Hexagonal
Not Available
1.8 Birefringence
0.0040-0.0070
0.007-0.010
1.9 Clarity
Color grading system
Transparent

Emerald and Star Sapphire Optic Character

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

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Emerald and Star Sapphire Transparency

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

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