I designed this hanger to work with the Diamond Bloom Shelf. The shelf itself it fairly skinny, so traditional mounting techniques become visible and can ruin the aesthetic. With this hanger, only the decorative initial plate that acts as a hold back device for the top corner. It has 2 screw holes that fit most standard screw holes as well. 

There may be slight movement when mounted using only this model, but a small piece of double-sided tape on the back of the center beam will keep it sturdy and level.