Jomashop has Montblanc Solitaire Royal Black18ct Diamond Ballpoint Pen on sale for $88,990. Shipping is free. Yes, that’s nearly 13 carats of diamonds set into a writing instrument. Crafted with over 3,000 hand-set G-color diamonds and 18k white gold, this piece redefines the term “luxury pen.” It’s not just a pen—it’s a legacy in your pocket.