Unless you've got a huge jacket on, it's a little hard to hide the typical ring case. It's large and in charge, and typically will show some kind of bulge if its in your suit jacket pocket or hanging with your phone and keys in your front pants pocket. You also don't want to risk holding on to the thing loose, as the investment and importance is way too high to risk it sliding out. Solution? This case from Clifton. It's super slim, about the size of a thin wallet, and hides the ring using some pop-up book like magic. Priced at $99 and available here.