This is a bright green belly button ring made from a solid TITANIUM 6ALV-ELI (Grade 23) IMPLANT GRADE with a clear cubic zirconia jewel on the bottom bead. The bottom bead size is 5mm and top bead size is 8mm. This belly ring is 14 gauge and measures 10mm-3/8 inches. Titanium navel rings are lightweight, corrosion resistant, and less likely to react with bodily fluids! For extra safety your titanium body jewelry can be sterilized in an autoclave.