This belly button ring is simply gorgeous. To start with, it has a curved barbell of 3/8" (10 mm) in length and a top ball with a white stone. But if you look closer, you will see that it has several oblong stones fixed in a bigger drop-shaped stone. All of them are diamond faceted, so light reflects on them from different angles. The stones under it are distributed in three rows, and a single oblong stone hangs at the bottom end. 

The curved barbell that goes through the piercing is made of surgical steel, just like most body piercing jewelry. The bottom ball and the structure of the stones are made of brass and have been covered with a rhodium plating so that they get a radiant color, just like surgical steel.