Watch Jewel Burst Walkthrough and see how to swap jewels until three or four of them are similar. The blue box will be lost when the jewel is destroyed. To advance to the next level, you must smash all of the blue boxes before the timer runs out. You will earn the three-star bonus if you complete it in the shortest period of time. If you take too long clearing the blue box, you will lose one star at a time. Keep an eye out for dynamites!