Blue – the color of water, a symbol of truth, faithfulness, and sincerity. These alluring blue stone engagement rings offer an alternative to diamonds with stones such as sapphires, tourmaline, blue topaz, and aquamarine. Enchanting tones of blue look beautiful set in white gold, platinum, or gold. Sapphires are the birthstone for September and aquamarine is the birthstone for March, so those rings might hold extra significance for your special lady if she was born in one of those months. These showstoppers are visually dazzling, but it’s the prospect of what they promise – commitment and celebration – that is most exciting!