Imagine finding a diamond in your roof? Unexplained diamonds have turned up in odd places, but the tech has come a long way since our heist and scientists can now figure out where they come from. Diamonds are the ultimate stealth wealth but tracing is making it tougher for thieves. Our Argyle diamonds went on a wild ride but in the end, some were recovered. Why have they reappeared all these years later and where is the rest of the multi-million dollar haul?