This belly button ring is a very special one. Firstly, it is equipped with an internal thread, which is a great advantage when inserting jewelry. With regular external threads, there is a high possibility of scraping the skin around the piercing with the sharp thread. That won't happen with an internally threaded ring. 

Secondly, the stones have such a play of colors that it's hard to say what colors are involved. They can all display almost all the colors of the rainbow. However, they all have a base color. The stones are held in place by tiny prongs, allowing a larger surface to reflect the light. 

The belly rings are available in three material colors, and you can get each one with four different stone colors. We have decided to call the stones multicolor, red, pink, and aurora borealis (referring to the pictures from left to right).