Gem Hunters Down Under

Three groups of sapphire hunters encounter big problems underground. A lack of water, wrong turns and big machines all cause issues for the teams.

Deep in the heart of the Australian Outback lie some of the largest gems on the planet. Passionate teams take big risks to hunt down these elusive treasures.

The Richardsons hunt for fresh sapphire grounds. Will this big gamble pay off Lost underground, the Mifsuds have a radical solution. Ray and Paul enter a danger zone.

A tangle with a jack hammer could cost the Mifsuds a huge sapphire. The Rubyvale rocks bring the Old Timers unstuck, while Brianna faces her own set of disasters.

Huge floods and a mini tornado hit the Gemfields. Max fights his way to his mining lease, but did the flooding fill or destroy his dam? Todd and Brianna get bad news.

It's almost the end of the mining season. Water in the dam means one last chance for sapphires for Max and Glenn. It's terror in the tunnels for Todd and Brianna.

Old Timer, Ray, and his best mate Paul set foot on a new claim for the first time. The Apprentices begin connecting two mine shafts via an underground drive.

After a run of bad fortune, the Bushies are back digging on Max's claim. The Richardsons return to a long-forgotten claim and decide if it's worth reopening.

After missing the mark to connect their shafts underground, the Mifsuds call on their kids for help. Ray finally gets decent sapphires out of his new claim.

The annual Gemfields Festival is approaching, and Todd and Bri are madly stockpiling gems. The Mifsuds undertake yet another massive maintenance job.

Ray takes on the job of bashing and sawing through his biggest rough stones. The Bushies reckon they've finally hit payday. But is it wishful thinking?

Anthony goes back to school, learning to cut gems, while Jodie enjoys the peace as she digs alone. The Richardsons dig deep at the old Rabbi Claim.

Old Timers Ray and Paul return to where they removed a huge boulder to see if it's hiding gems. Gemfield newcomers Matt and Amber hunt down sapphires.

Old Timer Ray has another claim, but drilling a hole brings its own set of problems. Plus, Michael and Cherie's claim isn't producing enough sapphires.

Anthony and Jodie get back to the business of finding sapphires. Matt and Amber have gone into partnership with a local miner. Nigel and Rosa dig for gems.

Michael and Cherie head out to their surface claim. Ray and Paul's replace the engine on the drill rig. Rosa gets a crash course in operating the wash plant.

Michael and Cherie are joined by their kids on their surface claim. Matt and Amber are back to square one, luckily Paul comes to the rescue.

Anthony and Jodie install the ladder in their unused shaft. Matt and Amber dig underground on their new claim. Nigel gets a ring made for Rosa.