The Old Timers buy a new claim; the apprentices try to connect a mine shaft to their underground drive; the kids strike an agreement with their neighbor.

The Bushies are back mining, hoping for a change of luck; the Richardsons return to an old claim to see if it's worth reopening; Todd and Brianna divide and conquer to keep their business ticking over.

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

Todd and Bri prepare the gems for sale at the Gemfest; the Mifsuds undertake a maintenance job; wet weather forces the Richardsons to reopen an old claim.

Following the highs and lows of sapphire hunters working in extreme conditions in the heart of Central Queensland, Australia.

Anthony learns to cut gems while Jodie goes underground to mine alone; the Richardsons dig deep at the old Rabbi Claim; the Old Timers attempt to move a 500 kg billie boulder out of the shaft wall.