Ring with oval-cut London Blue Topaz measuring 10x14mm and made in 10 karat solid gold. The ring belongs to the Stella collection, characterized by a star-shaped pattern behind each gemstone. The ring is made in 10-karat gold, and is stamped with 417, which means that it contains at least 41,7% pure gold. Their 10-karat gold is certified Conflict-Free which ensures that the gold is not extracted in conflict areas. Material: Gold Karat: 10K Stone: Topaz Stone Colour: Blue Number of Stones: 1 Stone Shape: Oval Available sizes: 48,50,52,54,56,58 Does it come with certificate? Yes Can the piece be engraved? No