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Gyrolite and Phlogopite Optical Properties


Phlogopite and Gyrolite Optical Properties


Optical Properties

Luster
Vitreous, Pearly   
Pearly   

Pleochroism
Not Available   
Not Available   

Dispersion
Not Available   
Not Available   

Transparency
Not Available   
Not Available   

Refractive Index
1.535   
1.530-1.573   

Optic Character
Not Available   
Not Available   

Crystal System
Triclinic   
monoclinic   

Birefringence
0.0140   
0.0280-0.0450   

Clarity
Not Available   
Not Available   

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Gyrolite and Phlogopite Optic Character

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

Similar to their colors, Gyrolite and Phlogopite 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, Gyrolite is Not Available while Gyrolite is Not Available in appearance.

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