As the March birthstone, aquamarine and its ocean blue hue also represent the 19th wedding anniversary. Of course, if you love this color as much as we do, you don't need a milestone to go for aquamarine. The contemporary U prong setting showcases the 5 AAA quality gemstones. Available in the precious metal of your choice, this ring features 1.50cttw of aquamarine and is arppoximately 4.4mm wide.