Obsidian Knives

By 
jenndodd
   ·   
Published Sep 11, 2021
   ·   
Affiliate Disclaimer

Obsidian knives are one of the sharpest types of knives and can be used for different materials. They leave a smooth cut on many surfaces and don't need maintenance as much as other knives. Over time, they become duller but are easily sharpened with a little sandpaper or metal file.

An Obsidian knife takes a long time to form because it is made from molten rock that cools down relatively quickly. It means there are no air bubbles in the Obsidian blade, making it easier to cut through things.

The super sharp edge of the blade also means it can cut very easily through many materials. However, it will chip or crack if dropped on a hard surface because the glass is not particularly strong.

In this article, we review some of the best obsidian knives.

Our Top Picks For Best Obsidian Knives

Reviews Of The Best Obsidian Knives From Our Research

1. Medium Obsidian Blade

MEDIUM OBSIDIAN BLADE
  • BLADE ONLY-DOES NOT INCLUDE HANDLE OR SINEW
  • 4"-5" in Length
  • Colors can vary
  • Handmade one at a time!

This knife is made from obsidian, which is a naturally occurring volcanic glass. It has an arrowhead shape with sharp edges on both sides. It's 7 inches long and the width at its widest point is about 2 inches.

The blade is mostly black in color while some of it has a dark gray coloring near the handle where it's notched. It's easy to grip and feels solid in your hand.

The blade has a nice sharpness to it which means you can cut through things easily. However, it doesn't hold its edge for as long as some knives, so you'll need to sharpen this knife more often than most people would prefer.

As with many obsidian blades, the coloring of the blade is mostly black throughout.

Features

  • Features a black obsidian blade
  • Designed for flexibility and durability
  • It has a notch at the end of the handle where you can attach twine, string, or laces to keep it secure in your hand when not being used.

Pros

  • Sharp and easy to use
  • Relatively long-lasting edge
  • Nice grip with the notched handle

Cons

  • Does not maintain its sharpness as well as other knives.
  • The blade tends to chip or crack after it's been dropped on hard surfaces.

2. KVK Crystals One 7" Indian Spear Point Arrowhead

KVK Crystals One 7" Indian Spear Point Arrowhead Agate Chert Flint New Project Point
  • Length: 7" AVG
  • Width: 1.5"-2" AVE
  • No two are alike
  • Hand Knapped By a Master knapper
  • You are Buying One Amazing 7 inch spear point

This 7-inch obsidian knife has a spear point shape, and it's black in color near the handle and fades into gray towards the end of the blade. The edge on both sides of the blade are sharp and you can get a nice grip with its notch in the handle like in other knives we've reviewed.

The obsidian blade of this knife is only sharp on one side, limiting its usefulness as a daily tool compared to knives with sharp edges on both sides. The edge does hold for some time, but you'll probably need to sharpen it more often than most people would prefer. It also lacks the flexibility of other obsidian knives which makes it a less useful tool.

The knife is mostly black in color with some gray at the end near the handle notch. It feels solid in your hand and its design means it's easy to grip securely when you're not using it.

Features

  • Designed with sharp edges on one side for extra flexibility
  • The handle contains a notch so you can attach twine or laces to improve grip.

Pros  

- Good handle design allows for good grip when it's not being used.

Cons

  • A dull edge on one side makes the knife less useful in daily life for cutting and slicing tasks.
  • The obsidian blade is relatively soft, so you'll need to sharpen it more often than other knives.
  • Not as flexible as obsidian blades with sharp edges on both sides

3. KVK Crystals Ten 3" Indian Spear Point Arrowheads

KVK Crystals Ten 3" Indian Spear Point Arrowheads Agate Chert Flint New Project Points
  • Arrowhead Length: 3" AVG
  • Arrowhead Width: 1" AVE
  • No two arrowheads are alike
  • Hand Knapped By a Master arrowhead knapper
  • You are Buying 10 Amazing 3 inch Arrowhead spear points

KVK Crystals makes a great 10 pack of 3-inch obsidian arrowheads. They have a spear point shape and they're made from naturally occurring volcanic glass. Each blade is black in color with some gray at the end near the handle notch.

It's easy to grip these knives securely when you're not using them because there's a notch in the handle like in other knives we've reviewed.

The edge on both sides of these blades is sharp and you can get a nice grip with its notch in the handle like in other knives we've reviewed. The obsidian blade is only sharp on one side, limiting its usefulness as a daily tool compared to knives with two sharp edges.

The edge does hold for some time, but you'll probably need to sharpen it more often than most people would prefer. It also lacks the flexibility of other obsidian knives which makes it a less versatile tool.

The 10 pack is well designed and easy to grip to store or carry easily when not using them.

Features

  • Designed with sharp edges on both sides for extra flexibility and better performance in all situations
  • The handle contains a notch so you can attach twine or laces to improve grip.

Pros    

  • Good handle design allows for good grip when it's not being used.

Cons

  • Dull edge on one side makes them less useful in daily life for cutting and slicing tasks.
  • The obsidian blade is relatively soft so it's likely to lose its edge quickly.
  • They're not as flexible as other obsidian knives with sharp edges on both sides.

4. Stone Tone One 2" Black Obsidian Arrowhead

Stone Tone One 2" Black Obsidian Arrowhead with Carry Pouch
  • Measures approximately 2" in length.
  • Hand-carved naturally occurring black obsidian. Includes black carry pouch.
  • Can be used for meditation, healing, reiki, or as an altarpiece. Protects user from and removes negative energy to create and convert into positive energy.
  • Product of Stone Tone One.

Stone Tone sells a 2-inch obsidian arrowhead that's black in color with some gray at the end near the handle notch. It has a nice design with sharp edges on both sides and a handle notch so you can attach twine or laces to improve grip.

The edge on both sides is sharp and it'll hold for several uses before you need to re-sharpen it. The design of the body is good because there's a notch in the handle like in other knives we've reviewed.

The obsidian blade is relatively soft which means that it won't retain its edge for long and you'll need to sharpen it more often. It also lacks flexibility.

This obsidian blade doesn't have sharp edges on both sides so it's not as flexible. It can make tasks like the skinning games more difficult when compared to other knives with two sharp edges.

Features

  • Designed with sharp edges on both sides for extra flexibility and better performance in all situations
  • The handle contains a notch so you can attach twine or laces to improve grip.

Pros

  •  Good handle design allows for good grip when it's not being used.

Cons  

  • Dull edge on one side makes them less useful in daily life for cutting and slicing tasks.
  • The obsidian blade is relatively soft so it's likely to lose its edge quickly.
  • They're not as flexible as other obsidian knives with sharp edges on both sides.
  • Dull edge on one side makes them less useful in daily life for cutting and slicing tasks.

5. KVK Crystals One 4" Indian Spear Point Arrowhead

KVK Crystals One 4" Indian Spear Point Arrowhead Agate Chert Flint New Project Point
  • Length: 4" AVG
  • Width: 1.2" AVE
  • No two are alike
  • Hand Knapped By a Master knapper
  • You are Buying One Amazing 4 inch spear point

KVK Crystals sells a 4-inch obsidian knife that's Indian in origin with some gray at the end near the handle notch. It has a nice design with sharp edges on both sides and comes with laces so you can have a better grip when it's not being used.

The edge on both sides is sharp and will hold for several uses before you need to re-sharpen it. The design of the body is good because there's a notch in the handle like in other knives we've reviewed.

Features

  • Designed with sharp edges on both sides for extra flexibility and better performance in all situations
  • The handle contains a notch so you can attach twine or laces to improve grip.

Pros

  • Good edge retention

Cons

  • Not as flexible as other knives with sharp edges on both sides
  • The obsidian blade is relatively soft so it's likely to lose its edge quickly.
  • They're not as durable as other obsidian knives with tough blades that retain their edge for longer periods of time.

Buyer's Guide For Obsidian Knives

A knife constructed of obsidian is known as an obsidian knife. There are two types of handles available. It could be an obsidian-only device or a combination of obsidian and another material for the handle. When shopping for the best obsidian knives, keep the following suggestions in mind.

Purpose

When looking for knives made of obsidian, the first thing you need to think about is what you'll be using them for. If it's just cutting fruits and vegetables with small movements in your kitchen, then unless you're very confident in your skills with knives, maybe a regular stainless steel knife will work perfectly.

Suppose you want to use it for hunting or preparing any other sort of food, you need to look at the design. Try looking for knives that have sharp edges on both sides, which will make skinning or cutting easier.

If it's a multi-purpose knife you're looking for, buy one with multiple uses like a multi-tool so you can make use of all its features.

If you want a replacement knife for one that's recently been lost, either to skinning a deer or just to whittling wood, then the obsidian blade might be a good option since it is sharper than other knives. You'll have to sharpen it more often, but the time saved by keeping an edge will be more than makeup for it.

Blade's Form

The next thing is the kind of blade you prefer. You want to look at it. The obsidian knives come in many shapes, styles, and sizes, so you need to select what is best for you. The drop-point blades are one of the most prevalent blade forms. It's beneficial to skin or smears a pet. A tanto blade with a torsional cut at the back is ideal for this type of use if you're more interested in slicing and cutting.

Size

The ideal way to use an obsidian blade is to skin a deer or to whittle wood. You want a bigger blade with a thicker tang like a hammer or ax for camping and such outings.

Weight

Weight is something else that you need to take into account while looking for obsidian knives. Assuming you've got space, a full-size knife is great for hunting, fishing, and camping. They are broader, longer, and are more axed or hammered in metal. A folding knife is ideal for lightweight operations such as opening pouches or cartons.

Quality

Finally, you should check the material quality of your obsidian knife. A superb obsidian knife is noted for its sharpness. It is confident, robust, and durable, with strong, rust-resistant blades. If you are searching for a knife to hunt, fish or camp, it needs to be hard enough to last long periods of time in every kind of weather.

Price

Obsidian knives are occasionally less expensive than carbon steel blades, although this is due to the fact that they are made in factories considerably less frequently. Most obsidian knives are handcrafted by people who collect the volcanic glass and then transform it into a blade using a technique known as knapping, which involves fragmenting the stone into smaller and smaller shards until the appropriate shape is achieved.

Frequently Asked Questions For Obsidian Knives

Are obsidian knives of high quality?

When it comes to kitchen knives, obsidian knives are pretty fragile. They can be brittle, so they're definitely not the ideal choice for the rough and tumble of the kitchen, especially if they're going to be slashed against something hard. Obsidian is not exceptionally hard (in contrast to diamond). Yet, it has the capability of becoming extremely sharp.


Are Obsidian Knives used for surgery?

Some surgeons use scalpels made of obsidian. The sharpest blades made recently are studded with obsidian stone flakes. According to them, a few surgeons are gaining an advantage by employing them for fine incisions that heal with minimum scarring.


Is obsidian capable of slicing through DNA?

Because the sharp blades make incisions that heal faster, they are used in modern medicine to cut through DNA.


Are obsidian knives long-lasting?

Despite their brittleness, they are quite durable in the sense that they can maintain their edge for significantly longer periods of time.


Is obsidian capable of slicing through cells?

An obsidian knife can cut across cells on a cellular level instead of tearing them as a steel knife does. A more precise cut will help a wound to heal faster and with less scarring. Stainless steel scalpels are up to 100 times sharper and smoother than black volcanic glass scalpels.


Why are obsidian blades so sharp?

Because of its hard, glass-like properties, obsidian can be extremely sharp. Its brittle properties are a result of its hardness. Obsidian blades are never used to pry with, unlike metal knives.


Is it possible to melt and forge obsidian?

Yes, it'll melt, but it won't be cast. Obsidian is an amorphous substance, meaning it is a glass with a completely random internal composition. Minerals are not optically transparent because they cool slowly and create their unique crystal structure.


Final Thoughts

All in all, people looking to buy obsidian knives should be very careful when handling them and should take necessary precautions for safety. Always take caution when using an obsidian knife, as they are extremely sharp and fragile. Be sure to protect your hands, neck, and face from the sharp obsidian blade.

crossmenuchevron-down