After bringing it to the park's Diamond Discovery Center for identification, the Wredbergs, of Granite Bay, California, learned that the gem was actually a 4.38-carat yellow diamond. "I didn't ...

The sparkler is a three- to four-carat oval diamond set on a solitaire ring, says Olivia Landeau, the founder and CEO of The Clear Cut. “This is a classic and timeless style ring,” she adds.