The popularity of the gemstone increased as many celebrities started stepping out flaunting such amazing black diamond rings on their fingers. Still, there are many interesting facts about these black beauties that you may probably not know. Two of those facts are listed below   They are Believed to Be Extraterrestrial Gemstones Although the details regarding most of the colored stones are uncovered, there are still some doubts when it comes to the origin or the geological birth of black diamonds. In fact, some studies in the field say that black diamonds are from outer space. The main reason for this is the unavailability of black diamonds until the 1900s, as well as the presence of nitrogen and hydrogen traces in the stones. You Can Own the Carry Bradshaw Ring Diamond rings with black diamonds became extremely popular after the popular drama series “Sex and the City” hit the screens. In the show, a guy proposes to one of the main leads of the show, Carry Bradshaw, with a 5 ct black diamond ring. This paved the way for the manufacture of thousands of black gems and most diamond ring stores exhibit the replicas of Carry diamond rings as well now.