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Agate
Agate

Nacre
Nacre



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Agate
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Nacre

Agate and Nacre Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous
Not Available
1.2 Pleochroism
Absent
Not Available
1.3 Dispersion
NoneNA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Not Available
1.5 Refractive Index
1.530-1.543Not Available
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Not Available
1.8 Birefringence
0.004Not Available
Achroite
0 0.296
1.9 Clarity
Translucent
Not Available

Agate and Nacre Optic Character

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

Agate and Nacre Transparency

Similar to their colors, Agate and Nacre 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, Agate is Translucent while Agate is Translucent in appearance.