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Pietersite was discovered by
Sid Pieters in 1962 in Namibia, Africa. Currently China and Africa are the only
known sources of Pietersite. Pietersite has brecciated, fibrous bands of blue,
gold and red tiger eye type fibers in quartz. The fibers in Pietersite were
folded, fractured and split, later reformed and naturally cemented together
with quartz by geological processes. Pietersite has the chatoyancy of tiger
eye with a chaotic pattern of colors.
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Quartz is the most abundant
mineral on Earth. The ideal crystal shape of quartz is a six sided prism
with a pyramid at each end. In nature the crystals are often grown together
and appear in a mass losing their crystal form. Pure quartz is clear. Colored
varieties include rose quartz, amethyst, smoky quartz, and others. The most
important distinction
between
types of quartz is
that of crystal structures
visible to the unaided eye and those visible only under high magnification.
Chalcedony is a generic term for cryptocrystalline quartz which is one of the
later types.
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