The Key to your Heart . This Pendant has a Stunning Round Brilliant Solitaire that is half of carat or 0.50 ct* & Moissanite Diamond inlaid in the center along with accents around the Vintage Inspirational Key Pendant that is proportionally sized to perfection to sit between the clavicle area and collar bone on the neck . Comes with GRA Certification ( Moissanite Diamond Report ) listed with all of the credentials. 100% Passes Thermal Diamond tester & Passed as Diamond , While The Moissanite tester indicated it was in fact a Moissanite! Would make a great gift for mom , wife , girlfriend, family member or friend ! Please feel free to ask any questions you might have about it ! Metal : 18 K White Gold overlay over Sterling silver (*Stamped on back of Pendant & near clasp of the Chain). Gemstone: Moissanite Diamond Cut : Excellent Polish : Excellent Symmetry: Excellent Weight : 0.50 ct * Clarity : VVS1 Measurements: 5mm