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Fire Agate
Fire Agate

Grandidierite
Grandidierite



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Fire Agate
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Grandidierite

Fire Agate and Grandidierite Optical Properties

1 Optical Properties
1.1 Luster
Waxy, Vitreous, Greasy, Silky
Vitreous, Pearly
1.2 Pleochroism
AbsentWalter Schumann
visible
1.3 Dispersion
NoneNA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.530-1.5431.578-1.639
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Orthorhombic
1.8 Birefringence
0.003-0.0090.037-0.039
Achroite
0 0.296
1.9 Clarity
Translucent
Gemmological Tables (2004) More from other references

Fire Agate and Grandidierite Optic Character

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

Fire Agate and Grandidierite Transparency

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