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Ammolite
Ammolite

Grandidierite
Grandidierite



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Ammolite
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Grandidierite

Ammolite and Grandidierite Optical Properties

1 Optical Properties
1.1 Luster
Silky, Vitreous
Vitreous, Pearly
1.2 Pleochroism
None
visible
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Not Available
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.520-1.6701.578-1.639
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Orthorhombic
1.8 Birefringence
0.135-0.1450.037-0.039
Achroite
0 0.296
1.9 Clarity
Not Available
Gemmological Tables (2004) More from other references

Ammolite and Grandidierite Optic Character

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

Ammolite and Grandidierite Transparency

Similar to their colors, Ammolite 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, Ammolite is Not Available while Ammolite is Not Available in appearance.