Egyptian Treasure Trove

You are extremely lucky to find in the already surveyed up and down the pyramid hidden secret burial of a noble Egyptian. It is literally peppered with precious stones, but hidden so securely that many archaeological expeditions have failed to find the camera with the sarcophagus. Your persistence was rewarded and now it's time to collect the treasures, but should hurry, because the ceiling unreliable and can fail. Grab from three or more identical gems, or will not work.