Jewel - a precious stone.  As I don't actually have any precious stones hanging around, especially no orange ones, I thought of a slice of orange with bubbles to be a jewel of a shot!

You will need a camera, a tripod, light, a large orange, a knife, some fizzy water or cheap soda, and a clear glass bowl. 

To set up, slice your orange and put the water into the bowl.  You may need to weight down your slice or clip it to the side of the bowl so that it stays under the water.  It is best to backlight your fruit.  I put white paper between the light and the bowl. I find it easier to shoot from above, but you can do it from the side as well.

Have some fun and see what you can do!