You can ask an expert’s opinion to be sure about the real quality of the diamond. When the quality is confirmed, your next step will be mounting the black diamond to the most suitable ring – and this is important point! Because you cannot purchase a high class diamond and mount it into a cheap silver ring – it is like buying a Ferrari’s engine and set it for a Prius. If your woman prefers her 1 carat diamond engagement rings mounted to silver or platinum, then there won’t be a problem. But if she goes for gold, you should buy 14K gold ring.