Established in 1991, Mark Peter’s Diamond Designs is a family owned and operated business based in Plainfield, IL. We offer innovative, attractive designs you won’t find anywhere else, for bridal and fashion jewelry. Our highly-trained and friendly staff is always happy to help you find the perfect piece. We also offer custom design, jewelry & watch repair, appraisals and more in-house! Visit our store today and let us help you with all your jewelry needs.