For Monica Rich Kosann, whose high jewelry collection, The Jewels of Nature, uses rare Australian black and crystal opals and Mexican fire opals, the answer was hiding in plain sight. Kosann turned to ...

But when such items that people inherit from loved ones get massive appraisals in terms of monetary value from experts as ...

She cashed it in for $552." In another case, a vintage wave-shaped solid gold ring hid inside a $13 bag of costume jewelry at Salvation Army. Another shopper picked up a rare 13k gold and opal pendant ...

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