Operational since 1978, Modern Design Inc. has been specializing as a manufacturer and wholesaler of diamond jewelry. Based in Los Angeles, Calif., the firm manufactures titanium, platinum, 14 and 18 karat white/yellow gold. It offers a range of diamonds in different sizes, shapes and types, including round diamonds, princess cut diamonds, marquise diamonds, oval diamonds, asser cut diamonds and cushon cut diamonds. Some of the products it offers include diamond stud earrings, tungsten rings, diamond pendant, tennis bracelets and titanium wedding bands. Modern Design Inc. is a member of the Jewelers Board of Trade.