One woman in London has expensive taste and didn't know it. She spent $15 on a ring about 30-years-ago, figuring it was a piece of costume jewelry. Turns out, what she actually bought was a 26.27 carat white diamond.
Now the gem is going up for auction at Sotheby's next month and is expected to bring in somewhere near $454-thousand. The owner, who asked not to be identified, said she wore the ring every day with no idea how much it was worth.
Source: Associated Press