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How to Make a Synthetic Diamond

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Step 9: Admire the Finished Product

Picture of Admire the Finished Product
After the mugs have completely cooled, remove them from the microwave.

The oiled graphite will be broken. The others should largely be intact. You'll also find a small lump, slightly larger than a grain of sand where the oiled section was placed.

Congratulations! This is the product of your labors, a genuine diamond.

I took the raw diamond to a jeweler I know and had her test it. She confirmed that underneath the scale material, there's a tiny bit of diamond material. She said that its quality was pretty poor, but it did fluoresce like a "real" diamond.

Now, admittedly, this homemade synthetic diamond is too small and too filled with inclusions to make into jewelry. But, it technically qualifies as a diamond... and I made it, so that's pretty cool.
 
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dqsdlfkj1 year ago
@barkbark

How do you make a protein "cancerous?" Cancer involves a mutation of a cell's DNA. DNA that is already mutated can be safely eaten, as it gets broken down into nuclitides before it enters a cell. Protein that is mutated is eliminated by decomposer proteins (forgot their name), and the only worry about mutated proteins are prions, which are very rare. I do not know if you can create a prion via microwave (they are extremely stable, so why do we not see them around? they must have a high activation energy then!), but I believe the only prions that are malicious are ones that get inside your brain.
zoteman943 years ago
It can't make diamons for some reasons:
If you heat the graphite at 5000°C it should react with air to make carbon dioxide, also that temps would melt the coffe cups and if you claim that you got a lot of pressure, the cups would simply move and release what is in middle of them, or they would also broke.
The CVD isnt just ionizing carbon and letting it grow, because it should grow as graphite not diamond.
I don't want to ruin your article, but I don't want to see more people damaging their microwaves, wasting a lot of energy (and money)...
mrcrumley (author)  zoteman943 years ago
Believe me, you are not ruining this article. Pretty much everything you've stated has been pointed out in some form over the past year-and-a-half. However, You might want to read this Instructable to see how a lot of these concerns were negated.
Cheathum144 years ago

I don't like being "that guy" but it seems there are plenty of others on this site so im going to say it anyway; thats not a diamond. Here are a few reasons why.
1. The pencil lead you used contains a large amount of clay, not just graphite.
2. Microwaves are not capable of generating the heat neccesary to recrystalize carbon.
3. Even if the microwave could reach the neccessary temperature, the pressure required to make a diamond is around 50,000 to 70,000 times that of earth's atmosphere.
4. How is it that you claim to have made a diamond in your microwave if diamonds weren't even synthesized until 1953, six years after the first microwave oven was made? If they had the technology in 1947, why not use it then?

Sorry for pooping your party, but it looks like im not the only one.

Let me bomb your party.

1. A real diamond placed in a CO2 atmosphere will dissolve into "nothing"--no pressure or heat involved.

2. Fake industrial diamond is not manufactured under such high temperatures or pressures either.

3. An Australian high-school student developed a way of coating materials in diamond micro-dust, using COLD and low pressures--great for making grinding wheels but hopeless for laser focusing devices.

Superheat and pressure is only theory.
It isn't only theory, graphite is the most stable allotrope of carbon at ambient temperature and 1atm pressure. (Yes you can convert diamond into graphite in an inert atmosphere at around 1000°C) Maybe there are some ways that don't need ultra high temperatures or pressures, but it is proven that diamond is more stable than graphite at these conditions and thats why it transforms into it.
@Teknology
You didn't quite bomb my party. I know that diamonds can be formed at much lower temperatures and pressure.(Microscopic diamonds can form on the surface of the sun where the temp. is only 10,000 and where there is little pressure) I was just saying that for a diamond of that size (visible to the naked eye) to be formed, it would take more than the pressure and heat a microwave can generate. Also, if i'm wrong, so be it, i'm only a sophomore in high school anyway and i'm taking physics next year.
mrcrumley (author)  Treknology3 years ago
And let me party on your bombing: You're not the first person to point this out.
I was bombing Cheathum14, not you. But I do re-assert that extreme heat and pressure will not be the methods by which "gem" quality diamonds are reproduced--and even then they won't be "gem" quality because they will lack the unique flaws of the natural product.

Of course, if subsequently worthless "pure" diamond can be grown then lenses and other optics will take a massive left turn in efficiency. And yes, I confidently predict that such method will not only validly suck carbon out of the atmosphere, it will turn out rocks in such volume that the South African economy will collapse.
mrcrumley (author)  Treknology3 years ago
 Maybe... but they'll always have the World Cup.
mrcrumley (author)  Cheathum144 years ago
Your response was more thoughtful than the usual, so allow me to retort:
If the "clay"in question is Clay Aiken, that only strengthens my case - his voice is like diamond.
Maybe you didn't notice the "doneness" button on my microwave... I think it goes to "11."
I assure you that the pressure I was under from my wife to NOT burn our house down exceeded 70,000 bars.
In 1953, President Truman announced we had developed the bomb. Later that month, Arthur Miller's "The Crucible" opened on Broadway. That's just too much of a coincidence for me to believe diamond-microwave technology hadn't been discovered.

Also... you should read the other comments to see how this story ended.

:) Well played. I thought there was something odd about this instructable. Also, pranking me isn't quite that difficult because im the most gullable guy in my county.

 I hope you don't live in poland. 
haha, i live in texas and i'm gullable, not stupid :)
 Oh my bad I misread that, thought you said country. 
I liked!
I will try in my microwaves...
Thanks!

prada-shoes4 years ago
if only I could turn this into a jewelery lol
thesinner4 years ago
You should have checked the phone book for a local analytical lab. XRD scans will tell you straight up what's in it. My guess is that it's simply bulk carbon left over from your burning olive oil. The probability of any of that carbon to be in the diamond allotrope is only slightly better than a lattice in the pencil lead you've started with. Also note that pencil lead is not pure graphite and is primarily made from clay.
mrcrumley (author)  thesinner4 years ago
Um... you might want to read more of the comments I made - particularly the ones on the last page of this instructable. But thanks for the advice. Although, in this case, an analytical lab isn't really what I'd need. Do they have things called spurious labs?
ianherbert14 years ago
didnt work broke microwave
mrcrumley (author)  ianherbert14 years ago
Oh, no! Another person fake-broke their non-existent microwave NOT replicating this fake diamond making process.
Tuizner5 years ago
I did something similar to make a diamond abrasive wheel for a grinder. This is a very good use for the small diamonds that are generated from this process. Simply take a carbon fibre (graphite fiber in the US?) fabric (as typically used in the composites industry) soaked in lard or other animal fat and place onto your grinder wheel where you would like the diamond coating. I used lard because it can tolerate higher temperatures than vegetable oil like olive oil. The carbon fabric I used was a thin piece of 12k twill weave fabric - this isnt so important but you must ensure that it is PAN-based rather than pitch (I tried pitch based carbon but for some reason it didn't work - no idea why?). Again the whole lot went into a microwave (mine was 1200W) on full power for one hour ensuring that the piece is covered (I used a Pyrex bowl). After an hour, there is a fair bit of smoke so best do this in the garage. On examination, the grinding wheel is covered in black ash. However if you scrub this off you will see (and certainly feel) that underneath the ash, small diamond pieces have been formed and melded to the grinder wheel. It isn't pretty but it sure works a treat and saves a good £50 too! Bargain!
what it you soaked alot of pencil lead in olive oil then tied it together and microwaved it? would you get alot of small dimonds? or a couple big chunks that are hopefully big enough to cut and small ones?
cfishy5 years ago
This is so cool! Is your woman impressed?
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