This was an 18ct gold diamond ring But we converted it to a pendant The diamond is 0.25ct ,quarter carat . A very clean ,white ,bright top quality diamond,with no visible inclusions. Diamond 6mm diameter in its setting the circle is 14ct gold , stamped 585. Pendant 17mm diameter. Hanging on a 18" silver gilt chain I have done a few of these and can convert your own ring if you are in uk It's a lovely way to wear inherited engagement rings.