And synthetic diamonds can be made to be supraconductive too. Diamonds have lots of use in industry. Answering to GP: diamonds happens to be really beautiful

And synthetic diamonds can be made to be supraconductive too. Diamonds have lots of use in industry. Answering to GP: diamonds happens to be really beautiful too, very shiny but not too shiny and not "not really shiny" like many lesser stones (like zirconium). Many people like diamonds. Blame society, blame anything you want. But diamonds have fanclubs since thousands of years.