United Kingdom Size 12mm Statement Hoop to US: 16G Piercing Standard

United Kingdom Size 12mm Statement Hoop: Features a post thickness of 1.2 $\text{mm}$ (0.0472 $\text{in}$), hoop inner diameter of 12 $\text{mm}$, gemstone carat equivalence of N/A (Hoop), and earring style Hoop / Bold Fit.

US: 16G Piercing Standard: Features a post thickness of 1.2 $\text{mm}$ (0.0472 $\text{in}$), hoop inner diameter of 0 $\text{mm}$, gemstone carat equivalence of 1.50 ct+ / Bold, and earring style Stud / Cartilage.