Aquamarine Cocktail Ring, Natural 4x6mm Oval Aquamarine Ring Sterling Silver. This ring contain's one natural Aquamarine gemstone measuring 4x6mm, and high quality cubic zirconia's. This ring is 925 sterling silver and platinum plated, also available in gold or rose gold plating. This item includes a gift box and a certificate of authenticity with purchase. This item is made to order, please allow up to 10-15 days for processing and delivery of this item.