This Mod include an SLP file of three rare gemstone mines which I designed. The mines are a red ruby mine, a green emerald mine and a blue sapphire mine. The mines can be used as eye candy to spice up your map designs and you can use them in your modded scenarios o add side quests where you have to find the rare gemstones.
Hope you enjoy and find them useful. In future I might update with more mines but for now you've got these three.