With water in the dam, Max and Glenn finally get a break but their machines break down; Todd and Brianna face a phobia and an unsafe situation; the Mifsuds' season might end with a family feud.

Gemfield newcomers Matt and Amber hunt down sapphires.

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.

After a striking run of bad fortune, the Bushies are back digging on Max’s claim. The Richardsons return to a long-forgotten claim and try to decide whether or not it is worth reopening.

The Mifsuds hope their two sons will make the difference, but it might cost them a massive sapphire. Ray and Paul come badly unstuck with a 40 tonne drill. Todd and Brianna drop a $8000 sapphire.

Michael and Cherie head out to their surface claim.

Michael and Cherie are joined by their kids on their surface claim.

Anthony and Jodie get back to the business of finding sapphires.

Michael and Cherie's claim isn't producing enough sapphires.

A lack of water sends Max and Glenn out into the wilderness to hunt sapphires. Anthony and Jodie have taken a costly wrong turn underground and the Richardsons' big machines bring on big problems.