From the post:
Return to the world of Cacao! Cacao: Diamante adds more depth with four new modules: The Gem Mines, the Tree of Life, the Emperor, and the New Workers. Play the modules individually or combine them to customize your gameplay. Combine Cacao: Diamante and Cacao: Chocolatl with the base game for a gigantic variant!
Walking deeper into the mine it gets colder and darker. The rocks shift as you run your hand along the wall. Lifting your torch, the light reflects on something in the distance. You walk closer and see the edge of a gem embedded in the wall. With your tools and a bit of work to excavate it, a ruby falls from the rock into your hand. Just a few more gems to find before returning to the tribe.
With the Gem Mine module of Cacao: Diamante, players can send workers to unearth valuable gems in the mines. Players uncover the colorful gem pieces from a three-dimensional mine cart. Collect gems in all four colors and exchange them for the valuable gold and gemstone-encrusted masks.