ALL ABOUT BASICS celebrates minimalist design with simplistic and modern pieces that are meant to be layered and stacked. - Made in Japan.- 18K Yellow Gold.- Ring width 0.37 cm(approx.), Motif width 0.7 cm(approx.)- US Sizing. Extra Small: US 4.25 (approx.) Small: US 5.75 (approx.) Medium: US 6.0 (approx.) Large: US 7.0 (approx.) Extra Large: US 8.75 (approx.) Ring Size Guide