Ron LeBlanc and his team travel to Vietnam to score some high-rolling rubies. Operating under the government’s radar, the team is tailed by an agent intent on making sure they leave empty handed. But, Ron has a few tricks.

The new blue gemstone tanzanite is only found in one small part of Tanzania, and it is famous as one of the bluest of all blue stones. But the supply of tanzanite is already running out, so Ron Le Blanc, Diane Robinson and Bernie Gaboury have traveled to Tanzania's Mount Kilimanjaro to get in on the action.

Ron LeBlanc and his team of gem hunters travel to Brazil, home to more gemstones than just about anywhere on the planet. Ron's mission is to find imperial topaz - a stone so rare it is only produced by a single mine in Ouro Preto, Brazil. He's looking for a monster stone: a rock that will cut a 20-carat gem … and he's willing to spend big money to get it.

Ethiopia is home to the strictest gem buying rules and regulations Ron has ever experienced, so he'll have to navigate government minders and bureaucracy first if he's going to get his Welo opals. After vehicle breakdowns, police brutality and death-defying cliff descents, Ron has the chance to try to secure a huge package of rough Welo opal and a potential six-figure pay day.

Ron Leblanc and his team of gem hunters travel to Colombia in search of Muzo emeralds, the world's most valued gemstone. But before they can get their hands on these prized stones, they have to negotiate their way through Colombia, dealing with the infamous cartels which control the emerald trade.