Ring in silver and 18K yellow gold, 3 mm, heart 3 mm. The Ringo rings come in different designs, with heart, flower, ball and turtle. All are great to combine with each other. The rings are stamped with a turtle, the symbol of a long and happy life. This one has a heart in solid gold on top. Material: Silver & Gold Karat: 18K Stone: No Stone Ringband: 3 mm. Heart 3 mm. Dimensions: Heart: 3 mm. Does it come with certificate? No