The polished diamond studs are handcrafted with 0.20ct of lab grown diamonds and 18Kt recycled yellow gold. Sold as single or pair Material: Gold Karat: 18K Stone: Lab-Grown Diamonds Stone Colour: White Number of Stones: 18 Stone Carat: 0.2ct tw Type: DEFG VS+ Stone Shape: Round Brilliant Stone Setting Type: Prong Certificates?: No Can the piece be engraved?: no Dimensions: 7.5 mm x 7.5 mm