Belly jewels, they were mostly used by belly dancers to add flask and sparkle. Gems and precious metals held in the belly button with an adhesice. Not a true piercing, it is beautiful and sparkles all the same. There will be a complete line of birthstone belly gems soon, so keep an eye out for them. This is also not a birthstanone gem, just an unusual gem. Thannks for looking, please be kind and leave a review, or pm me with constructive critisim.