Spectrum Designz Welcome to Spectrum Designz®, your number one source for custom handmade mugs, pottery, plates, and coffee mugs. We’re dedicated to providing high-quality ceramics and excellent customer service. About Spectrum Designz Spectrum Designz is a leader in creating one-of-a-kind personalized ceramics and dishware. Our Ohio-based studio was founded in 2015 by artist John Smith, […]