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Zircon
Zircon

Holmquistite
Holmquistite



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Zircon
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Holmquistite

Zircon and Holmquistite Optical Properties

1 Optical Properties
1.1 Luster
Adamantine
Vitreous
1.2 Pleochroism
Weak
Strong in shades of violet when dark-colored.Anthony et al
1.3 Dispersion
0.04NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
Transparent
1.5 Refractive Index
1.810-2.0241.622-1.666
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
tetragonal
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
1.8 Birefringence
0.047-0.055Not Available
Achroite
0 0.296
1.9 Clarity
Transparent
Transparent

Zircon and Holmquistite Optic Character

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

Zircon and Holmquistite Transparency

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