Family owned and operated since 1991, Mark Peter’s Diamond Designs is based in Plainfield, IL. We offer innovative, eye-catching designs you won’t find anywhere else.

Our highly-trained, friendly staff is always happy to help you find exactly what you are looking for. We offer everything from bridal and fashion jewelry to watches. In addition to in-house custom design, we also offer jewelry and watch repair as well as appraisals and more!

Visit our store today and find out why we are Plainfield’s favorite jeweler. Not only do we offer the best service and selection in the area, but we also provide a no-pressure environment. Let us make your jewelry shopping fun again!


Lab-Grown Diamonds Now Available

We now offer Lab-Grown diamonds. Watch this video to learn about the difference between Lab-Grown and Mined diamonds.