This is an authentic TIFFANY & CO 18K Yellow Gold Black Onyx Paloma's Marrakesh Dome Pendant Necklace.  This stunning necklace is below the collar in length with a twisted leather cord and a large round pendant.  This lovely medallion is a disk set with an 18 karat Middle Eastern filigree design on top of black onyx and with a glazed surface.  This is a magnificent necklace with the unforgettable style of Tiffany & Co.