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Turquoise Gemstone Information. Turquoise is a sky-blue or green
translucent to o..
Onyx is black and white banded agate
(cryptocrystalline or chalcedony quartz). It ..
Pearls are organic gemstones that are
formed by shelled molluscs; mainly bivalved o..
Carnelian belongs to the quartz group of
minerals, the second most abundant mineral group o..
The name 'iolite' originates from the Greek
word 'ios' meaning 'violet'. Iolite's strong pleochrois..
Also called "rainbow calsilica," this is a man-made material that
displays vibrant layers of bold ..
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