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Natural diamonds -- formed deep within the earth's mantle -- are produced under 'extreme high pressure', 'extreme high heat' -- and because of the formation location, impossible to measure.
Man-made diamonds can be fabricated with extreme high pressure -- and the details are considered secret by these companies.
As well, man-made diamonds can be 'grown' -- and according to one manufacturer's Web site: "Our lab diamonds are grown from the tiny carbon seeds of pre-existing diamonds. Advanced technology - either extreme pressure and heat or a special deposition process - replicates the natural method of diamond formation."
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What is harder a diamond or fingernail?
A diamond is the hardest mineral on earth and your finger nail would break in half before you got enough pressure on a diamond to put a crack in it. Much less break it.
How much LPG low pressure gas is required to melt 300kg in a furnace?
Aluminium
How much heat and pressure does it take to make a diamond out of coal?
Since coal and diamond are both allotropes of carbon, your challenge will be to realign the molecules. The molecular structure of coal is substantially different from the structure of diamond. The first step could be to heat the coal to a temperature that would melt it. Since coal does not melt, but transforms by sublimation -- changing from solid to gas back to solid with no liquid state involved -- you would be defeated in the first step. Taking another tact, no amount of pressure will realign the molecules into the diamond pattern that you seek.
Is coal a black diamond?
No. coal is coal and diamond is diamond. They are both formed from carbon, but diamond is much harder than coal.
What type of bond is between carbon in diamond and graphite?
Graphite and diamond form a polymorphous mineral series which have identical chemical composition but different structures or shapes. The reason minerals with identical chemical composition can form different structures is due to the physical conditions, in particular temperature and pressure under which they formed. Graphite has a sheet structure horizontally with weak vertical bonds joining the horizontal sheets. This produces a weak unstable structure. Diamonds on the other hand have a very different structure and form a octahedron structure which is much more compact and denser structure and a much more stable compound which is the result of the extreme pressure during its formation.
Why is a diamond rare?
Diamonds are one of many different forms that the element carbon can take, and it is much easier for carbon to form other substances, particularly coal or graphite, rather than diamond, which requires extreme pressure and blistering high heat to form.
How much fuel pressure is required for a 89 mpfi firebird 2.8?
the required fuel pressure for the 2.8 litre is 34-47 psi
What are accesorries required for pressure gauges?
There are many accessories that are required for pressure gauges. Some of them include pressure snubbers, siphons, throttling devices, needle valves and so much more.
What is harder a diamond or fingernail?
A diamond is the hardest mineral on earth and your finger nail would break in half before you got enough pressure on a diamond to put a crack in it. Much less break it.
Can diamond form inside a volcano?
No. As the pressure at the relatively shallow depths where volcanoes occur is not high enough to form diamonds. However it is true that volcanic eruptions can cause diamonds to be erupted onto the surface but these diamonds were already formed at much greater depth.
How much electricity required to develop 1 bar pressure in a compressor?
None! A tank at atmospheric pressure already has an absolute pressure of 1.013 bar.
How much Minimum air pressure required for bag filter purging?
About 7kgf/sq.cm
What is the pressure required in 20 cubic meter?
How much crsand for 1 m3 concrete
How much LPG low pressure gas is required to melt 300kg in a furnace?
Aluminium
How much air pressure is required to operate the paint and bead guns?
40 - 60 psi
How much can you sell a two-carat diamond weighs 400 milligrams?
The price of any diamond depends greatly of its colour, purity, the existence of inclusions, and of course, the pressure of offer/demand.
How much pressure difference is required for continues air blow?
A hot air ballon - scientist johnpin
