When it comes to the iPhone, on which we seem spend more time than jobs and children combined, who hasn’t thought of the old adage that it’s worth its weight in gold? Now comes evidence. An anonymous company in Hong Kong has commissioned high-end gadget bedazzler Stuart Hughes to create a model worth nearly $15 million. Almost 97% of that cost is encrusted in the home button, made from ultra-rare 26-carat black diamonds, making the remaining 600 white-diamond pave in a solid-gold casing seem almost paltry. Rihanna has one in every carat.