Zsamuel Mens Sterling Silver 925 Blue Sapphire Cabochon and Black Mother of Pearl Oval Cufflinks Sterling Silver - 925 &amp; 9K yellow-gold - Genuine Sapphire &amp; Black Mother of Pearl High Quality Cufflinks - Durable Whale Tail Back Light Weight - Easy To Wear Rhodium Plated (will not tarnish) Size - Approx. 15mm x 20mm