Diamonds’ popularity is due primarily to the DeBeers organization, which had established the first large scale diamond mines in South Africa, then began a very successful advertising campaign, persuading consumers that engagement rings should have a diamond.
Nevertheless, diamonds are not rare.
Diamonds are the hardest material found on earth but apart from that, they hold no exceptional distinctions. All gem grade materials are considered as rare, making out just a small fraction of the earth. However, among gems, diamonds are indeed the most common. Still don't believe it? Watch the video for more information.