Princess channel
I've been making a court section channel set ring and a round section, for many years and they have always proved popular. These are a variation but using 1.5mm princess cut diamonds. As with the other rings, the stones are set in 18ct gold channels.
As the diamonds are 1.5mm across, I'm restricted to 3mm, 4.5mm and 6mm. I can, however, make a wider one if you want.