Jewelry has finally unveiled the identity of their fourth member! She was briefly seen in 'Part one' of the group's comeback teaser (released earlier this week), but fans were able to find out for themselves who the mysterious fourth member was, thanks to a unique marketing tactic by UFO Town. On January 18th, fans could literally match up the pieces to a 'Jewelry Puzzle Game' in order to find new teaser images and a 20-second audio preview of the group's comeback track. They discovered that the fourth member's name was Kim Yewon. Born in 1989, she was�a Star Empire Entertainment trainee for four years. Netizens commented, "It's so unique how they came up with the idea to reveal their new member through a puzzle game," "The game and song are both so addicting," and "I'm looking forward to the two new members!" Jewelry will be making their comeback on January 27th with "Back It Up." Source: Sports Chosun via Nate