Our Keystone Team’s Reputation Is Set in Stone

Natural stone is our passion. And creativity and attention to detail rules our world! That’s why 98.6% of our customers give us the highest satisfaction ratings. In fact, homeowners, builders and developers give us top satisfaction marks in ten categories, including manufacturing, installation, professionalism, and project turnaround.

Andy Wiegman – President and Owner

Andy Wiegman Owner of Keystone Marble and GraniteAndy is the new president and owner of Keystone Marble & Granite as of 2017. He is an industry veteran with experience in both construction and real estate. He’s been involved in the development of more than 750 residential units and $500 million of construction throughout his career. It’s because of these experiences that he’s able to truly relate to his customers.

Valerie Hoppens – Sales Manager

Valerie Hoppens – Sales ManagerValerie joined the team in 2019 and has 5 years of experience with stone fabrication and 15+ years in residential and commercial design. She earned her BA (Bachelors of the Arts) at Mount Mary with a major in Interior Design and a minor in Fine Arts. She helps our team with everything from scheduling and providing quotes to selections and design.

Alex Hernandez – General Manager

Alex HernandezAlex has been with Keystone since 1998. He started out working in the shop and performing installations, then advanced to take on additional responsibilities, including the day-to-day operations here at KMG. He now handles all field measuring, as well as CNC programming, purchasing, production, installation, and overseeing our plant and equipment.

Interested in Joining Our Team? Apply Now!

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