Simple Statement As men prefer simple rings with masculine shapes, this type of designs will be perfect for them. Here, a black diamond of decent size is set using a bezel setting on the ring. Additionally, the simple band of yellow gold adds to the sparkle of the ring. Small Diamonds Small diamonds are ideal for men's diamond ring designs, as it will give a subtle sparkle that suits their manly nature. In this type of designs, small black diamonds are embedded in the yellow gold band with uniform gaps between them. The diamonds are secured using a bezel setting as well. Shades of Grey Grey diamonds are one of the popular choices for men’s diamond rings, after black diamonds. Here, a huge grey diamond of nearly 36 facets is embedded on the platinum metal using a bezel setting. This ring is also perfect for people with active lifestyle.