Patrick and Kirsty unearth a giant million-dollar Amethyst cluster; Pete and Kyle struggle to extract extremely fragile and rare Crocoite crystals.

Patrick faces extreme temperatures to recover one of Australia's million-dollar Amethyst clusters; in contrast, Pete and Kyle struggle in frigid conditions.

Patrick and Kirsty search for rare Aquamarine crystals on their remote Queensland lease; Frankie and Ebriony face off against wild pigs and dingoes.

Hugh and Jarrin need a miracle to keep their mining operation alive; Patrick and Kirsty are desperate for an $80,000 payday of high-grade crystals.

The Rockhounds need a miracle to turn their season around; Kirsty and Patrick need to find rare Ocean Kyanite crystals to have a chance of recouping their debt.

Five crystal hunting teams confront extreme conditions in the Australian outback, hoping to unearth some of the world's rarest and most breathtaking crystals.