The Yin Yang Small necklace from Mystery Joy is part of the Protection Collection. Made in 18K gold with lab-grown Lab-Grown Diamonds, the symbolic design represents balance and unity, interpreted in a delicate and elegant form. Material: Gold Karat: 18K Stone: Lab-Grown Diamond Stone Carat: 0,11 ct Stone Type: VS Chain length: 40 Does it come with certificate?: Yes Can the piece be engraved? No