If you haven't seen SATC 2 maybe you would like to live now and come back later. If you did watch it then you must remember he huge rock Big puts on Carrie's finger at the end. It's her punishment, oh hello! The ring in question is a collaboration between Itay Malkin, Patricia Field with SJP's input.
Itay Malkin is known for using black diamonds and I'm assuming he made his name thanks to this, because black diamonds are not like anything else ;) jaw dropping?