Files format- stl and 3dm Metal/Purity-18 kt Stock Number -T1Approximate Metal Weight -2.5-4.5Grams Approximate Diamond Weight-0.20-0.60ctsExtremely feminine as well as festive this midnight diamon stone studded necklace in 18Kgold symobolizers excellent expressions of one 's love and affection . make your precious jewelry ore precious by Engraving your lone on it !