Our factory. Summit Jewelry Manufacturing, Ltd, is a "state of the art" full service factory. This purpose built facility was built in 2007 and in 2010 earned a prestigious ISO: 2000 certification for manufacturing and managerial excellence. Manufacturing floor area is approx: 50,000 square feet and offers casting, stamping, plating and model making. The on-site refinery is certified and occupies approx: 6,000 square feet. The administration building is approx: 15,000 square feet and houses executive offices, design center, photography center and computer aided design. The factory currently employs approximately 1,100 workers and 70 administrative staff.