Old Timer, Ray, bought a new claim sight unseen, and he and best mate Paul are setting foot on it for the first time.

After an extraordinary run of bad fortune, The Bushies are back digging on Max’s claim, hoping it will bring a change of luck.

After missing the mark to connect their shafts underground, the Mifsuds call on their kids for some desperately needed help.

The annual Gemfields Festival is fast approaching, and Todd and Bri are madly stockpiling gems, preparing the best ones for sale.

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.

Old Timers Ray and Paul return to where they removed a huge boulder to see if it's hiding gems.

Old Timer Ray has another claim, but drilling a hole brings its own set of problems.

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.

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.

A tangle with a jack hammer could cost the Mifsuds a huge sapphire.

Huge floods and a mini tornado hit the Gemfields.

It's almost the end of the mining season.