Jeff High, founder of jewelry-design software company Gemvision, died of cancer on September 5 at the age of 60. High dedicated his entire career to inventing and producing computer-aided design and manufacturing (CAD/CAM) systems and photography technology for jewelers, according to his obituary. He established Gemvision in 1990, and it was later acquired by jewelry manufacturer Stuller. In 2012, High became Stuller’s chief innovation officer.…