These classic symbols are found in most people's collection in one form or another. I found simple classic versions of a clover, horseshoe and star in14k yellow gold with diamonds. They are perfect stack finishers. Once available as a trio, now sold individually.
Clover - Length including bail: 11/16". Bail opening: 3.9x2.3mm.
Horseshoe - Length including bail: 3/4". Bail opening: 3.9x2.3mm.
Star - Length including bail: 1/2". Bail opening: 3.9x1.7mm.
