What's the name of the rare ore that can be found in Extreme Hills Biome?
Info: Extreme Hills is a hilly biome and is not too rare. This is the only biome in which emerald ore spawns. With its mountains, you can build a bridge from one mountain to another. Fun? This biome is common near a taiga biome. This is because they are both cold biomes. In cold biomes, it snows above y95