Diamonds In Wilmette, IL

Bella Cosa Jewelers considers it an honor to become a part of your story. We have worked for over a decade to bring you beautiful, high quality diamond rings in all price ranges. As a full- service jeweler, we offer polishing, sizing, and more on your diamond engagement ring.

Browse our spectacular collection of high-quality loose diamonds in every diamond shape and carat weight, including hard-to-find larger carat stones and a full range of unique diamond shapes. We promise that you will never overpay on a high-quality Diamond.

Shop our extensive collection of loose diamonds to find the perfect diamond shape. All diamonds we sell are GIA, AGS and EGL USA certified and laser inscribed as well as being verified with our state of the art diamond grading equipment.

Each diamond is hand-selected with a focus on quality and attention to detail to ensure maximum brilliance. We look through thousands of diamonds to find just a few worthy of our clients– by the time it’s reached you it has already been pre-selected.