A Knife is one of the essential tools for any emergency survival situation or loss in the wild.

Just knowing how to make a Stone Knife out of the material from nature can make all the difference, and you don’t need to be a skilled blacksmith or carpenter to learn this skill.

The knife that you will build will be used for many purposes.

It will help you cut meat, cut through rope, skin, or wood; It can also be used as a hunting weapon.

Scout Your Area for Ideal Rocks

First of all, you need a Rock to start with. It can take quite some time to find suitable stones to make your stone knife because some regions are abundant with rocks, some aren’t, so do some research in the area you’re going to.

The most common places to look for rocks are caves, cliffs, beaches, creek beds, etc.

Find Rock for Blade

It would be best if you had a rock that is big enough, like a size of a small melon with a flat or concave side for making the blade, because most of the relatively big rock will have a weathered outer surface called the cortex, the bigger the rock, the more quality material there will be under it.

It’s a good sign that the rock is a quality material for making the blade if it makes a ringing sound or similar sound when you clack them together.

Flint, jasper, chalcedony, and obsidian are some of the ideal stones used to make blades, other types of rock you may need to experiment around.

Flint

Flintstone is categorized as a variety of chert.
It can be found in an area where there was an ocean at one time or beach.

Obsidian

Obsidian is a volcanic glass form found in the margins of lava flows where cooling is rapid.

Source: How to Identify Obsidian

Find Hammer Stone

Find a rock that’s round and a little bigger than a large egg; it’s for use as a hammer to smash the rock for the blade.

Strike the Rocks

Place the rock on your thigh and strike the edge of the rock with your hammerstone.
Smack until you knocked out a flake of stone.

Watch the videos below to get the whole process of making the stone knife and also making the knife handle.

Slate: Alternative for Stone Knife

You can consider using slate in some areas that do not have access to flint or obsidian; slate blades are made by grinding the stone.

Conclusion: Better then Nothing

Again, it’s not a replacement for a good survival knife, but it can be very handy in an emergency situation; use it for all the cutting tasks.
Although the stone knife is nothing compared to your household knife bought from the store, it is better than nothing.