The miners return to the mountains in Colorado in the Season 2 premiere, as Amanda and Dwayne are after aquamarine, and the Dorris family look for amazonite and smoky quartz. Meanwhile, Rich scopes out his next dig site.

Amanda finds aquamarine in a dangerous place; Steve and Rich confront unwelcome visitors on their claims; the Dorris family make a spectacular find.

Summertime in the Rocky Mountains in Colorado brings daily thunderstorms, which force Joe to abandon a promising pocket, while the Busse family must leave their dig site. Elsewhere, Steve digs for amazonite near Lake George; and Rich finds a lost cache of topaz.

Evidence of claim-jumping forces the miners to go to extremes to protect their investments, including Joe, who pulls an all-nighter, while Amanda sets a trap on Colorado's Mount Antero.

Rich takes time off from mining to honor the memory of his brother with a donation; Amanda and her partner hunt for aquamarine on Colorado's Mount Antero; Brian's injuries present a new set of challenges.

Heavy rains create dangerous mining conditions; Amanda introduces Travis to her father; and Rich tunnels back into his topaz pocket.

Amanda digs for aquamarine in a dangerous spot; the Dorrises dig for topaz near Lake George; and Steve hunts for blue barite on the plains as the miners take bigger risks near the end of the season.

The arrival of autumn marks the beginning of the selling season for the Dorris and Busse families, but the quest for a big payday continues for the other miners, including Steve, who strikes a deal to mine a promising claim, and Amanda, who finishes cleaning out a lucrative aquamarine pocket.