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Holmquistite
Holmquistite

Almandine
Almandine



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Holmquistite
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Almandine

Holmquistite and Almandine Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Greasy, Vitreous
1.2 Pleochroism
Strong in shades of violet when dark-colored.Anthony et al
None
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
0.03
Rank: 15 (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.622-1.666
1.770-1.820
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
cubic
1.8 Birefringence
Not Available
Not Available
1.9 Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Holmquistite and Almandine Optic Character

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

Holmquistite and Almandine Transparency

Similar to their colors, Holmquistite and Almandine 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, Holmquistite is Transparent while Holmquistite is Transparent in appearance.

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