Zircon
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Zircon is a mineral belonging to the group of nesosilicates and is a source of the metal zirconium. Its chemical name is zirconium silicate, and its corresponding chemical formula is ZrSiO4. An empiri
A lustrous crystal of zircon perched on a tan matrix of calcite from the Gilgit District of Pakistan
Optical microscope photograph; the length of the crystal is about 250 μm
Sand-sized grains of zircon
A pale blue zircon gemstone weighing 3.36 carats
Cubic zirconia
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Cubic zirconia is the cubic crystalline form of zirconium dioxide. The synthesized material is hard and usually colorless, but may be made in a variety of different colors. It should not be confused w
Zircon
…types of gemstone. Its Mohs hardness is between that of quartz and topaz, at 7.5 on the 10 point scale, though below that of the similar manmade stone cubic zirconia (8-8.5). Zircons may sometimes lose their inherent color after long exposure to bright sunlight, which is unusual in a gemstone. It is immune to acid…
Worker monitoring melting zirconium oxide and yttrium oxide in an induction-heated "cold crucible" to create cubic zirconia
Purple cubic zirconia with checkerboard cut
Multi-color cubic zirconia