In the case of eternity diamond ring style, the standard design features a simple platinum or golden band paved with tiny diamonds. When it comes to the color of gemstones, a blue diamond eternity ring is a perfect option. In fact, a recent study says that blue diamond anniversary ring is one of the most popular options amongst modern couples. One of the common designs that are featured in blue diamond eternity ring flaunts a platinum diamond ring band paved with sapphires and melee diamonds in an alternating pattern. If you prefer a unique and sparkling option for your blue diamond anniversary ring, a platinum band that showcases a row of vivid blue sapphires will be perfect. Here, the sapphires are highlighted by surrounding each stone with a halo of tiny diamond accents as well. For an affordable option, you can choose to decorate the diamond ring band only up to the half.