Prong-Set Navel Curves

Prong-Set Navel Curves are made of 2 distinct pieces.

On 14ga and 12ga Prong-set Navel Curves we use 6mm as a standard size, although these are also available in 4mm or 8mm.
10ga can have a 6mm or 8mm bottom gem.
From 8ga to 2ga we use a 8mm gems.

No glue is used to hold the stone in place. Instead the prongs are set directly around the stone.

From Anatometal:

All of our gemstones are high quality lab made synthetic stones. Each gemstone is hand set into the navel curve, and guaranteed for a lifetime. NO GLUES or Adhesives are used to keep the stones in place.
We do not use stones that contain lead. Genuine stones available on request.

At ANATOMETAL, we believe in a quality product that will withstand the test of time. Extreme care is put into each piece of jewelry throughout each stage of its conception. From the use of implant grade materials to hand polishing, we take the extra effort to insure that your jewelry is flawless. We firmly believe in the superiority of internal threading, as opposed to external. The threads tucked into the shafts and the edges of all of our jewelry rounded to a smooth finish ensure both safer insertion and a more comfortable, accelerated healing process. All casting of 18kt gold is done in-house to insure that the quality meets our high standards.