Pick Hot Forged Natural Ice. Black Diamond Natural Ice Pick is designed for pure ice climbing, and features a hot-forged construction for durability, and a lower tip volume built to improve penetration and pick placement.. The Hot-Forged Natural Ice Pick thrives on pure ice. Hot-forged for durability and featuring a low-volume tip geometry that’s optimized for easier penetration and better cleaning on frozen water ice, this pick belongs on your water ice tools..