MDC Diamonds was established in 1996. As US Cutter and dealer of fine diamond. Mdc Diamonds sells high quality 100% natural loose diamonds in all shapes (round brilliant cut, princess, emerald cut, radiant cut, pear shape, heart shape, marquise cut, oval cut, and cushion cut from d to to fancy colors, from 1 / 2 carat and up from flawless to si2, all certified.