Gem tools are tools made out of rubies, sapphires, amethysts, or crystals. Each gem can be made into the full set of tools (axe, hoe, pickaxe, shovel, sword) along with the hammers introduced by Pixelmon. All of these tools have 300 durability. Gem axes, pickaxes, and shovels break blocks at an efficiency between those of iron and diamond tools.
When used in combat, the damage of each gem tool is the same regardless of the material used. Gem tools deal the following amounts of damage: