Do diamonds burn

Answer 1

Diamonds will burn quite easily actually. Not so easily that your diamond will ever burn accidentally in a fire.

In a pure oxygen environment the temperatures are fairly low (1320 degrees) in our "real world" atmospheres are but 20% oxygen, therefore the temperatures to burn them must be 1520 or so degrees.

Jewelers coat diamonds in boron when retipping prongs as the solder melting points are higher than the flash point of a diamond. Boron coating keeps from oxygen getting to the stone during the repair. So technically diamonds are NOT flammable but ARE combustable. when a diamond does burn, there is no ash residue as a diamond is pure carbon and when burned (oxidized) it turns into carbon dioxide.

Just about everything will burn if exposed to a high enough temperature, but diamonds are certainly not considered flammable. This is because of the structure of diamond. Diamond is composed entirely of carbon, and each carbon atom is bonded two four other carbon atoms.

When something burns, the reaction is actually the combination of that substance with oxygen. So for diamond to burn, the carbon atoms must break their bonds to the other carbon atoms and form new bonds with oxygen.

Because of the interconnected and 3-D structure of diamond (the same reason it is one of the hardest substances on earth) would prevent this reaction from happening at any significant rate. Although if you broke the diamond down into the finest powder possible, it would definitely burn fast than if you had a single large diamond crystal.

In any case, diamond won't burn at anything but extremely extremely high temperatures!

Another Answer

Generally, flammability is not known as a characteristic of diamond, the hardest mineral known.

Diamond has the highest melting point: 3,820 degrees Kelvin, which is 6,416.33 degrees Fahrenheit, or 3,546.85 degrees Celsius.

Answer 2

As a practical matter, no diamonds do not melt - once in their crystalline phase, they will simply break down into graphite and go up in smoke when subjected to high temperature and an oxygen atmosphere...thus, they do not go from solid to liquid for all practical purposes. About 700oC is the temperature for combustion.

However, in an environment of incredible pressure, something you would not encounter in day to day life, then yes it can go to a liquid phase (melt).

A link is provided to an article on the melting of diamond. Hope that helps.

Answer 3

Yes. Under standard pressure and temperatures, diamond has a negative enthalpy. During the 17th and 18th centuries, multiple scientists expiremented with burning diamonds. Some thought that the diamonds "evaporated", but after tests in an inert gas chamber, it was determined that the diamonds did in fact combust, yielding carbon dioxide.

Answer 4

Yes. Diamonds are made of carbon and will burn to form carbon dioxide if heated in the presence of oxygen.

Answer 5

Yes, Lavoisier performed this experiment in the 1700s, and proved that diamonds were an allotrope of carbon. Temperature for combustion about 700oC.

it turns into ash after burned

Answer 6

Since diamond is pure carbon it will form carbon dioxide when burned.

Answer 7

800 degrees centigrade.