This Mounting will hold your Gemstone or One of your choosing. Click on this link in order to find the stone of your dreams. A semi-mount ring is an alternative to a ready-made, complete ring sold by jewelers. It bridges the gap between a completely custom-made ring and an off-the-shelf ring. It allows you to choose a setting and then choose a center stone, and have them assembled. This is popular with people who want to choose a loose diamond or other precious stone, or who already have a stone, and would like it mounted in an attractive ring setting.