BELUGA is a tribute to the endangered Sturgeon as they near extinction. Hirotaka’s signature double line rings are renewed for the BELUGA in a sleek and sophisticated open center silhouette with a beautiful dimension. - Made in Japan.- 10k Yellow Gold.- Ring width 0.16 cm(approx.), Motif width 0.96 cm(approx.).- Diamond 0.18 ct.- US Sizing. Ring Size Guide