Gems

Gems are added by and are used to craft intermediary tools between Iron and Diamond. They are just as quick as diamond, but they cannot mine Obsidian, and they don't last as long. The tools have about 500 uses. The current gems are Ruby, Sapphire, and Emerald. Saphires are the most common, but come in smaller groups. Ruby is the second-rarest gem, and Emerald is the rarest.

Tools
Each of these are made just like the vanilla versions, but with gems: