General Ruby and Sapphire Co.
General Ruby and Sapphire Company was founded in 1974 by our father, Warren Mills Sr. But its origin traces back to 1853 when L.H. Keller, a Swiss watchmaker, established the L.H. Keller Company in New York City. L.H. Keller Company was founded in order to provide American jewelers with Swiss quality watch parts and jewel bearings.