When you have a man with brains, a perfect gift is one that quizzes his mind. If that is what you are looking for, get him the 18-carat Gold Jigsaw Puzzle Cufflinks. The Bullet back closure cufflinks is sized approximately 7/8-inches x 5/8-inches. Priced at $3,830 for each pair, you stand to get ground shipping absolutely free. If you need to send it across the globe, feel free to send it as the seller’s promise that orders “usually ships the same business day”.