This 14-Karat Yellow Gold Curb Chain Necklace Features A Striking Emerald-Cut Diamond Centerpiece For A Sophisticated And Modern Aesthetic. Faceted Emerald-Cut Prong-Set Diamond = Approximately 0.44 Ct. Tw.; Color = G-H; Clarity = Si1-S12 Lobster Claw Clasp Closure Material: 14-Karat Yellow Gold Imported Approximately 15.5In Long With 1In Extender It Is Customary To Treat Most Gemstones To Achieve Enhanced Color And Durability. Some Of These Treatments May Not Be Permanent, And May Require Special Care.