This is a sweet baby blue navel ring solid TITANIUM 6ALV-ELI (Grade 23) IMPLANT GRADE with double matching jewels in blue. The top bead size is 4mm and bottom bead size is 6mm. 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.