Gift Idea. An elegant sterling silver, Blue Topaz gemstone cocktail ring. This unique silver ring makes the perfect birthday gift, anniversary gift or a gift for that special occasion. This gorgeous ring is set with 12.5 carats of genuine blue topaz gemstones which is highlighted by cubic zirconia hearts all set in solid 925 rhodium finished sterling silver. The total weight of the natural blue topaz gemstones and the 925 sterling silver weighs 12.5 grams. Compliments formal or dinner wear.