The Heart pendant is set with a heart-shaped Black Agate gemstone, and is a 0,005 carat brilliant-cut Diamond in the eyelet. The pendant is part of the Heart of Giving collection, with a focus on wearing symbols of love close to your heart with heart-shaped pendants set with birthstones and diamonds. The Black Agate symbolises serenity, koncentration, and protection and is said help you relieve worries. Learn more about Black Agate in our Gemstone Encyclopedia.The Diamond is April's birthstone, and symbolises love, strength, and invincibility. Material: Gold Karat: 10K Stone: Black Agate, Diamond Number of Stones: 2 Stone Carat: 0,005 Stone Setting: Flush Dimensions: Stone: 8 mm Does it come with certificate?Yes Can the piece be engraved? No