Solid brass with smokey mother of pearl. 18 carat gold plating. Dimensions: 12mm  A unique taste Each with its own distinct look, our handmade cufflinks draw the eye in a crowded room. A natural image Our ocean collection draws from the natural wonders of the warm waters. The smokey mother of pearl comes from the family of oyster pearl, to create a natural iridescence. Scientific name: Pinctada Maximus , Origin: Australia,  Family: Pearl Oyster Handcrafted These cufflinks are turned on a lathe from a single brass rod and set with discs of smokey mother of pearl, which has a beautiful iridescence for a simple and sophisticated look.