When buying a diamond engagement ring be very wary of any diamonds that have carbon inclusions. These black appearing carbon flaws within the diamond are sometimes visible to the naked eye but sometimes require a loupe. Regardless their presence will greatly affect the value down the road if you want to upgrade or sell the ring. Since most of the value is usually in your center diamond the presence of carbon makes the diamond very hard to move on the wholesale market and thus you will receive very low offers for the stone.
Contributors: Paola Brewer from Posh Pawn