While most people prefer the colourless diamonds, there are some fancy coloured diamonds that are rare and pretty. A plethora of colours are available in fancy coloured diamonds, but the one that is the most unique are the black coloured diamonds.Because of their appearance and nature, not many people opt for them to be a part of their jewellery. However, jewellery made of black diamonds such as the black diamond engagement rings, have a charm of their own and tend to attract a lot of attention. One of the reasons why they are so rare is because most people don’t know about them and the myths surrounding them make them a less preferred stone. However, black diamonds have a charisma of their own and look absolutely stunning when used as a part of jewellery. Also known as carbonado diamonds, black diamonds are dark because of the high concentration of carbon in it. They look extremely carbonized and appear like porous charcoal in their unprocessed state. Unlike other diamonds, black diamonds do not shine. Diamonds reflect light and therefore appear brilliant. Black diamonds on the other hand absorb light and therefore don’t shine. The minimal shine that you see comes from their polished surface. The polycrystalline nature of black diamonds make them very hard. They are a 10 on the Mohs hardness scale and are harder than the normal diamonds in spite of having the same chemical composition. This is the reason why they are more difficult to cut and polish as compared to diamonds. It takes a lot of time to cut and process a black diamond. Some stones can take up to a year for cutting and polishing. All these properties make black diamond engagement rings a rare choice. If you are looking for something offbeat then visit us at our store in Hatton Garden, London and have a look at our range of black diamond engagement rings made from the finest black diamonds.Read more