First, a geology lesson diamonds are 99.95% pure crystallised carbon and can be extremely old - one to three billion years old, in fact. They are the hardest naturally occurring substance known and are formed beneath the Earth's surface when crystals of diamond occur in volcano feed-pipes. When volcanoes erode down, they release diamonds from their feed-pipes into layers of gravel which are later mined. However, due to the relative rarity of this natural process, diamond mines are found in just a handful of sites around the world. In rough form, diamonds are shipped to the world's cutting centres to be shaped and polished before being set as jewellery. It is the hardness, brilliance and sparkle that emerges during this process that transforms them into a girl's best friend diamond engagement ring is part of Tiffany engagement rings has dimension x pixel. You can download and obtain the Tiffany engagement rings images by click the download button below to get multiple high resolutionversions. Here is main information about Engagement Ring BrandsTiffany & Co. We have the resource more diamond engagement ring about Engagement Ring BrandsTiffany & Co. Check it out for yourself! You can get Tiffany engagement rings and see the in here.