Penguin Studs with Flair These Marcasite and White Mother of Pearl gold Vermeil accented penguin studs are just fantastic with a black tie tuxedo. The 18K gold plate with genuine mother of pearl, and marcasite detailing on these studs truly separates them from the flock. Hand Crafted Sterling Silver 18K gold plated vermeil accents White Mother of Pearl and Marcasite Black finish applied for longer lasting wear Four tuxedo studs (10mm width) Fixed back for studs Packaged in black lacquered wood display box & a velour gifting travel pouch perfect for home display (if an extra stud is needed please order single stud separately) Also available as cufflinks only