S55RGPD4.5BS2.5D_6.25
This open ring is set with a 4.5 mm emerald-cut square blue sapphire approximately .50 ct., heat-treated only, and a .12 ct., FG VS 2.5mm princess-cut diamond, bezel set in palladium. The shank is also palladium.
Generally, size down about 1/4 size in an open shank ring. This ring is a 6.25 is marked with c.iskiw and Pd950.
Dimensions: shank 2 mm thick x 2.75 mm wide