Patrick faces extreme temperatures to recover Australia’s biggest-ever, million-dollar Amethyst cluster. In contrast, Pete and Kyle struggle in frigid conditions.

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

Hugh and Jarrin need a miracle to keep their mining operation alive. Plus, 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.

Pete and Kyle take the biggest gamble of their season hunting valuable Tourmaline crystals as Hugh and Jarrin tackle the world's only Stitchtite quarry while Patrick and Luke explore not far from where a $250,000 crystal was unearthed.

The Rockhounds hunt a tropical rainforest river system not far from crocodile-infested waters as Patrick and Kirsty return to the site they found their million-dollar Amethyst. Jarrin and Hugh confront low oxygen levels and crumbling mine walls.

In the final week of the season, Patrick gets an offer for their million-dollar Amethyst cluster while his team race to unearth $200,000 of crystals, The Rockhounds face dangerously high tropical heat & humidity while Hugh and Jarrin hunt for $25,000 of Crocoite crystals in just five days, over 50 metres underground.

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