You can turn coal and/or charcoal into crystals and/or diamonds by heating up the coal, putting it in peanut butter, and then freezing it in ice.

Is it Possible to Make Diamonds from Coal and Peanut Butter?

You can’t turn charcoal or coal and peanut butter into a crystal at home by heating the charcoal or coal and putting it in peanut butter and ice. However, scientists can turn many carbon-rich substances into crystal in a lab.[1][2]

In other words, the videos online that shows coal and peanut butter turning into crystals after being set in ice are all fake.

None of these people actually put coal (or charcoal) into peanut butter and pulled out a crystal (or diamond). It doesn’t matter if you freeze it, or how much you heat the coal. These videos are simply attempts to get you to click on them so they could wrack up views (i.e., they are clickbait).

With that said, scientists can actually turn many things with carbon into crystal (including coal, charcoal, and peanut butter), but they have to do it in expensive labs, under specific conditions, over a long duration of time, and even then they only get tiny crystals out of it (for “how to make diamonds out of peanut butter,” see: “How to make a diamond from scratch – with peanut butter.”)

Not only that, but just in case science was wrong and those videos online were right, we tried this experiment… and, on that note, we can confirm all we got is a lump of coal / charcoal covered in peanut butter. Just like you would expect.

In other words, that Blossom video that shows “10 Tricks You Didnโ€™t Know You Could Do With Your Food“… is not real (I’ll feature a video below showing the clip from Blossom so we are crystal clear on what I’m referring to).

Also, Blossom (and especially the YouTubers who pretend to do this in a microwave) should issue a warning, because lighting charcoal in your house is actually dangerous and could result in… literally death (at least according to the warning label on charcoal).

Is it possible to make Diamonds from Coal and Peanut Butter?

Where Did the peanut butter / coal /diamond myth come from? In 2014 a German Geologist named Dan Frost was challenged by the BBC’s Future to make crystals out of peanut butter. He did! However, he did it in his lab. After BBC future published this back in 2014 the story went viral with substantially all articles leaving out the part about Dan doing this under very specific conditions in his lab (example, Gizmodo’s How To Make Diamonds Out Of Peanut Butter). The point Dan was trying to make was about heat, pressure, and carbon creating crystals in the earth’s mantle (see the quote below). Fast forward to 2018, and a misrepresentation of this story went viral claiming that you could make diamonds at home from coal (or charcoal) and peanut butter. To really understand the story, and the mechanics behind why peanut butter can be used to create crystals in general, see the original article from BBC Future “How to make a diamond from scratch – with peanut butter” (I’ve included an excerpt below).

The high pressures of the mantle force carbon dioxide from the rocks into the iron-rich minerals, which strip away oxygen, leaving the carbon to form a diamond. And that is exactly what Frost found when he recreated the process using his presses โ€“ essentially forging a diamond from thin air. Frost is hardly likely to make a fortune from his harvest; the diamonds take an agonisingly long time to grow. โ€œIf we wanted a two-or-three-millimetre diamond, we would need to leave it for weeks,โ€ he says. That hasnโ€™t stopped him experimenting with other sources for his diamond maker, however; at the behest of a German TV station, he attempted to create some diamonds from carbon-rich peanut butter. โ€œA lot of hydrogen was released that destroyed the experiment,โ€ he says, โ€œbut only after it had been converted to diamond.

– From BBC Future 2014

Does it matter if you use coal or charcoal? It doesn’t matter what substance you use or how carbon rich, you can’t turn coal and peanut butter into diamonds at home. That said, coal and charcoal are different substances.ย Quora explains it well, “Coal is the mineral anthracite, a fossil fuel composed of carbon and created over millions of years by the pressurizing and long term breakdown of of organic materials like plant remains. Charcoal is produced by slow heating of wood or other combustible substances in the absence of oxygen.”

Can I turn coal and peanut butter into crystals in the microwave?ย Microwaving these things in a plastic container is a really bad idea, especially if you do it indoors where you might breath in the resulting smoke, carbon dioxide, and toxic chemicals. There is no truth to the peanut butter coal myth, so definitely don’t do the microwave version. So again, to be clear, it is literally impossible and actually highly dangerous to make diamonds at home using a piece of coal, peanut butter and a microwave.

Turning Coal into Diamonds, using Peanut Butter

Is there any real way to make crystals? Yes, there are a few fun ways to make crystals at home. However, none of them involve peanut butter. Here are a list of ways to actually make actual crystals at home without destroying your microwave or endangering your family.

Bottomline: Anything with carbon can be turned into a crystal under the right conditions, so you did learn something from those viral videos (FACT: coal, charcoal, and peanut butter are all carbon rich and can be turned into crystals… under the right conditions, in a lab). However, you can’t do this at home, and burning charcoal inside is dangerous. Thus, you are more likely to injure yourself or your family playing with hot charcoal inside than you are to make a crystal (low chance of injury; zero chance of making a crystal).


You canโ€™t turn coal and/or charcoal into crystals and/or diamonds at home. However, 1. scientists can in a lab using specific methods, and 2. you can die from carbon monoxide poising from burning [for example] charcoal inside.

So, do learn about science, but please don’t try this at home (and if you do, don’t try it indoors).


  1. How To [actually] Make Diamonds Out Of Peanut Butter [in a lab].
  2. No you canโ€™t turn peanut butter into a diamond or crystal.

"You Can Turn Charcoal and Peanut Butter into Crystals" is tagged with: Life Hacks

Vote Fact or Myth: "You Can Turn Charcoal and Peanut Butter into Crystals"

Your Vote: {{ voteModel || 'no vote' | uppercase }}

Emma on
Doesn't beleive this myth.


Mar'quanna Franklin on
Doesn't beleive this myth.

no you can’t i’ve tried it.. it doesn’t work

bella on
Doesn't beleive this myth.

if there is no pressure on the coal, then obviously it’s not going to go from layers of black material to a clear solid crystal. it’s kinda common sense? logic? whatever you want to call it?

Thomas DeMichele on

Further, the amount of pressure needed can’t be recreated at home.

Notryanhiga on
Supports this as a Fact.

Lol idk why I thought this is real

Thomas DeMichele on

I am pretty sure it inspired countless millions to disregard their logic and buy some coal and peanut butter… thanks internet. ๐Ÿ˜‚

Wolfgirl819 on


Thomas DeMichele on

The video is a lie essentially. The coal didnโ€™t turn into anything, whoever made the video doctored it to make it look that way. ๐Ÿ™‚



Thomas DeMichele on

Sure, nice simple explainer minus the snark and minus other things charcoal can be created from ๐Ÿ˜‰

Funnily enough though, to the point of this article, coal, charcoal, AND peanut butter all have the carbon needed to make a crystal. The problem isn’t which carbon rich substances we choose, the problem is people thinking that smearing peanut butter on hot coal or charcoal and sticking it in ice at home will create a diamond/crystal.

That simply isn’t true, to make crystals from a carbon rich substance, you need to be in a lab with the proper equipment.

matthw on

dose it wrork

Thomas DeMichele on

No it doesn’t work.

Mahmoud Elakkad on
Supports this as a Fact.

is the crystal is a diamond or is the charcoal is coal / EN Mahmoud
Elakkad .

Thomas DeMichele on

It doesn’t matter if we say crystal or diamond or coal or charcoal because they are all equally not true in terms of this at home experiment, yet are all true in a lab.

In a lab you can turn things with carbon into crystal or diamond specifically, and both coal and charcoal contain carbon. However, you can’t do any of this at home with a glob of peanut butter and some ice cubes.

Or at least, that is the short answer without getting into the difference between diamond and crystal and coal and charcoal (or the carbon in peanut butter).

Matthew on

lol you not meant to heat them up but burn them up … and yes it does work as long you know what you doing …

butter meant to put the fire out and trap the carbon dioxide …..

and ice … well you know


Thomas DeMichele on

Aspects of what you are saying are correct. For example it is correct that you would need to release the carbon. However, the implications of your post are wrong. This experiment as presented (with this idea of making crystals at home with a little jiffy) does not work regardless of how hot you get the coal. Clearly if we wanted to do this we would ignite, but not incinerate completely, right? But since it doesn’t work, that part doesn’t matter ๐Ÿ˜‰