In the UK, 9 carat gold is used frequently. I like it for its durability and the fact that a lot of vintage pieces can be found in this metal. Caitlin Victoria has used it to craft this vintage-looking ring, set with a cubic zirconia amethyst in an emerald cut. I like that the claws and band have a bit of a twisted, rougher hewn look to them, contrasting with the more refined stone.

This sells for £170.