Some of the best designs to work on your halo diamond engagement ring set are given below.   Round Halo Ring This is one of the most popular and classic settings in halo diamond rings. Here, beautiful round cut diamond is used as the main gemstone and tiny solitaires are given around it in order to give a baby bling from all the angles. You can also use precious gemstones such as rubies, emeralds, sapphires, etc., as the center stone. Cushion Cut Halo Ring In this type of halo diamond engagement set, a cushion cut diamond ring is used as the main gemstone. This is also known as candlelight diamond ring, as it exhibits immense sparkle under candlelight. Princess Cut Halo Ring In princess halo diamond rings, a charming princess cut diamond is used as the focal point and is surrounded by melee diamonds or tiny square cut diamonds in order to give a stylish twist. This is a perfect option for the brides who want their diamond ring to be unique and different.