Why are diamonds so expensive The reason why diamonds are expensive is not only because they are scarce, but also because they are difficult to mine, costly, and complicated diamond processing procedures. Ο λόγος για τον οποίο ονομάζονται τα διαμάντια "ο βασιλιάς των πολύτιμων λίθων" by humans and become the most expensive gemstone species is because diamonds [...]
