Aventurine Gemstone Beads from Rings & Things: Aventurine is a form of chalcedony (quartz) that contains small inclusions of various shiny minerals (usually spangles of mica or iron oxide), which give the stone a glistening effect known as aventurescence. Aventurine's granular appearance and particular translucence are its most distinctive characteristics. Most aventurine is naturally green, reddish brown or yellow. The popular bright green shade of aventurine that we all know and love, is generally enhanced to achieve a brighter, more uniform green.
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