What is the Obsidian Blade, and what’s it used for?
Obsidian is a volcanic glass capable of attaining and holding one of the sharpest edges of any material in the world. This makes it an ideal material for crafting a knife both in the real world and in Green Hell. Obsidian Blades are sharp, deadly, and durable.
This guide will walk you through how to craft an Obsidian Blade and offer some tips on how it can be used.
How to craft an Obsidian Blade in Green Hell

Obsidian is one of the game’s rarer crafting materials, so be sure you know how to get your hands on it if you plan on crafting this tool. You’ll also need something to form a handle and something hard to shape the obsidian.
First, you need to collect the following materials:
- 1 Stone
- 1 Rope
- 1 Obsidian Stone
Stones can be found in river beds, mountain passes, and caves or can be harvested from boulders and Big Stones. Rope can be gathered by collecting Liana vines hanging from large trees. Obsidian Stones can occasionally be found inside or near the entrances to caves.
Once you’ve collected the proper materials, craft the Obsidian Blade by:
- Opening the radial menu (by holding the
C
key) - Select crafting from the options
- Drag the rope, stone, and obsidian stone to the crafting rock from the backpack or environment
- Press the craft button above the crafting rock
Note: The crafting menu can also be opened from the inventory sidebar or by holding the alt-select button (default RMB
) over one of the ingredients and pressing craft.
How to equip the Obsidian Blade

The Obsidian Blade can be found in the tools tab of the inventory and occupies one of the four standard tool slots (numbered 1-4) or the additional unmarked knife slot at the far right. It can be equipped at any time by pressing the number key corresponding to the slot this tool occupies. Note that items in the knife slot cannot be equipped but can still be used for activities that require a blade, such as harvesting animals.
Tips and tricks for using the Obsidian Blade



The most obvious uses for the Obsidian Blade are skinning animals, harvesting herbs, cutting down leaves, and occasionally combat.
Short blades like this one aren’t the most prudent choice for melee combat due to their short reach. However, this weapon is one of the better choices if you must use a blade for combat.
The Obsidian Blade is a solid, above-average weapon, dealing more damage than a Stone Blade or Bone Knife. Though tied with the Obsidian Bone Blade regarding damage, the craftable Obsidian Blade is lighter and more durable.
If you plan to utilize this weapon in combat, focus on dodging to the side of melee attackers to stay within striking range while avoiding damage. Remember that while this blade is an excellent throwing weapon, it may be difficult to locate if you miss your target due to its small size and dark coloration.
Obsidian Blades can cut down trees and split wood if necessary, though they are generally a poor choice for these tasks.
It is typically a good idea to refrain from crafting these tools until your crafting skill is at least mid-level to avoid wasting rare materials on tools that will quickly break.
Currently, no obsidian tools have their own notebook entry.
Final thoughts on the Obsidian Blade
Creepy Jar’s addition of obsidian tools into the mix makes perfect sense. Indigenous people have been using razor-sharp Obsidian Blades for thousands of years. Though somewhat difficult to acquire, there aren’t many knives more effective than this one.
Looking for some more pointers to help you survive Green Hell? Check out our 10 Tips for Getting Started or our walkthrough on How to Survive Your First Day.