Walnut Creek, CA - Walnut Creek Police are looking for a man who walked into a jewelry store and ran off with a high priced diamond. The incident happened on October 12th, at approximately 2:55 p.m. when a man entered King’s Jewelers, 1501 N. California Boulevard, and asked to see a loose jewel. The man was handed the jewel and immediately ran out of the store and got inside the passenger side of a waiting vehicle. The diamond is worth $27,000.