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Pleochroic halos around crystals of zircons in a sample of biotite
Pleochroic halos around crystals of zircons in a sample of biotite
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A lustrous crystal of zircon perched on a tan matrix of calcite from the Gilgit District of Pakistan
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
Optical microscope photograph; the length of the crystal is about 250 µm
Sand-sized grains of zircon
Sand-sized grains of zircon
A pale blue zircon gemstone weighing 3.36 carats
A pale blue zircon gemstone weighing 3.36 carats