Don and crew risk run-ins with armed drug traffickers as they trek the snowy Silk Road into the Himalayas on a quest for a cache of rare beryl. Then, they camel up and race their rival across the sands of India in pursuit of a legendary Kashmir sapphire.

Rare stone hunter Don Kogen and team race to the most dangerous and lawless places in the world in attempt to beat rival buyers to newly uncovered treasures. In Cambodia they risk cobras, landmines, and pirates to make a deal on a stash of Sunset rubies.

Don overbids on a Romanian gypsy king's record-breaking zultanite stone but a sidetrip to a Transylvanian mine to raise more capital leaves them stranded and scrambling to come up with the $100K they're short before they lose more than just the zultanite.

The crew heads into and then under the mountains of Brazil to find a 10-carat emerald for a client. When Gavin accidentally shatters their $60,000 stone, Don and Tony make a risky deal with a notorious money lender and try to find a replacement in time.

After getting duped during a deal for Blue Turk, Don and the Gem Guys must salvage their botched mission by treking into the foothills of Turkey. The new mission will require they risk cave-ins, use misdirection, and do something Don said they'd never do.

On foot, Don and crew face the dangers of the African savannah in their quest to find a nomadic tribe who possess a legendary stone. Called Nemunyak, this extremely rare, violet-blue tanzanite is said to weigh half a pound and be worth a million dollars.