Minecraft AbyssalCraft Mod [1.7.2]

AbyssalCraft mod features:

2 new types of stone, called “Darkstone” (It’s 20% stronger than regular stone), and “Abyssal Stone” (generates within The Abyss, and can be crafted into Abyssal Stone Bricks, along with Darkstone being able to craft into Darkstone...
Minecraft AbyssalCraft Mod [1.7.2] - http://www.8minecraft.com/abyssalcraft-mod/