- Introducing the Monogram Handmade Inlay Cufflinks - square-shaped, 18k gold/sterling silver cuff links inlaid with black green opals, personalized with the owner's initials laser-cut from silver or gold. These stylish and durable cuff links are the perfect accessory for any gentleman who wants to make a statement. Order yours today and add a touch of luxury to your wardrobe. Read more below.