It is sterling silver and the stone is a double cut cubic zirconia. The stone is 6 1/2mm or approx a one carat size.
Also this is a closed back bezel setting or as I can say it is self cleaning! The stone is set very tightly into the bezel.
I have made this ring in silver and in gold and both together and have used many stones. It works with just about anything. It also stacks well with other rings really well.
This ring can be special ordered in silver or gold with any stone. Also size is not an issue.