Heart stones, Image Credit: Lori Carter
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Clockwise from the top: wonderstone from Utah, a pebble from Alabama, a pebble from Kentucky, a pebble from Mississippi, quartz from inside a geode from Kentucky, shell impression in gravel from Mississippi, concretion from Georgia, coquina from Florida (upper left), marcasite nodule from Alabama (left of center), novaculate from Arkansas (center).
Image Credit: Lori Carter