Mathew Jewelers Designs by yours truly. Each design is original, handmade in Zelienople, Pennsylvania, by our very own goldsmiths. Known as the area's custom design experts, we can proudly say that Mathew Jewelers employs the most top-rated, experienced goldsmiths. Today, we continue to maintain the integrity of our reputation for honesty, experience and quality. The Mathew family invites you to join us at both locations and become part of our family.