Abstract: A game including a box of granular material to simulate a mine, within which is hidden a precious gem, such as a diamond. The box is transparent and is securely packaged in an open-sided carton, for display of the box and its contents. The box may include a smaller transparent specimen box inside the lid of which has an integral magnifying glass. The object of the game is to sieve the granular material until the genuine, 1/4 carat diamond is found. A pendant and chain may be provided, in which the diamond may be mounted to form a completed piece of jewelry which may be worn.