To get the jewel off, it is best to take the top half of the controller off and hold it in your hands like you would when playing a game. Apply back and forth pressure up and down with either hand like wringing out a towel. Down with the right and up with the left, back and forth again and again. You will see the glue around the dome begin to turn white and it will eventually come off. Ive had them pop off after about three motions and others seem to take forever. As soon as it comes loose in an area, you can use a flat blade screwdriver or a butter knife to GENTLY pry off the dome