DeBeers artificially keeps the price of gemstone quality diamond high by restricting the ammount of diamonds that are on the market. Although top quality diamonds can be grown in the lab for about 200$ per carrot, there are few companies that have the ability to take on the larger gem mining companies. In addition people seem to think that a lab grown gem is somehow worth less than its mined partner, but that's only because diamonds are overpriced in the first place and most people know nothing about chemistry.
yes charcoal is simply carbon. Though other impurities may be present.
Graphite is less dense than diamond, due to the differences in crystal structure.
Sp is not a symbol for a chemical element.
Not necessarily. An element is a pure substance. You may find a pure element in a molecular form, such as Cl2 gas. A diamond could be considered to be a very large, single "molecule" of carbon. The technical answer to your question is 'no', though you may say yes if you are loose with definition. I suspect the answer you want is 'no'.
Charcoal dates back to a very ancient period, actually, and it started with creating a pile of pieces of wood on their ends (with openings being left in the bottom to admit air), with a central shaft to serve as a flue. Then the entire pile is plastered with turf (moistened clay). The firing begins at the bottom of the flue but slowly starts to spread throughout the rest of the pile. Under average conditions, 100 parts of wood yield about 60 parts by volume, or 25 parts by weight, of charcoal. This operation was so difficult and tedious, it was often left to the professional charcoal burners (colliers) to get it right.Production of charcoal began in Central Europe. It was a major cause of deforestation, though many woods in England were managed as coppices (in theory, trees that were cut and regrew, so that the steady supply of charcoal would be available forever), though critics said that shortages may relate to the result of temporary over-exploitation or the impossibility of increasing production to match growing demand.
No, charcoal is considered a mixture with different substances in it, but if you have pure graphite, it is considered an allotrope of carbon (like diamond).
Yes--charcoal is partially-burned wood. Charcoal briquets, though, are a different thing--charcoal plus binders plus petroleum derivatives...
Chocolate diamond rings are slightly less expensive that normal diamond rings so are a good option if you are looking to propose on a budget. The cheapest available are å£55 though you can pay in excess of å£7000 for a large stone with an expensive cut.
Diamond !... DIamond is the hardest (known) natural element on the planet. Small pieces of diamond help the drill bit cut though tough obstacles such as rock.
yes charcoal is simply carbon. Though other impurities may be present.
You don't "find" charcoal. You obtain charcoal by creating it with a wood log. Don't smelt Wooden planks, though you may use it as fuel.
Carbon is the element from which Diamond is formed. Just pure carbon. Made deep in the Earth. The hardest substance known (though all diamonds are not equally hard) and rates 10 on the Mohs hardness scale. This is an arbitrary scale. The hardest diamonds come from the NSW fields of Australia, and are in demand as polishing material. Diamonds also have the highest 'melting point' of the elements - around 3820oK. They have the highest thermal conductivity -- about 400 times that of copper. Other allotropes of carbon are charcoal, graphite, and perhaps graphene.
Parents should not mix charcoal with chocolate syrup, sherbet, or ice cream, even though it may make charcoal taste better. These foods may prevent charcoal from working properly.
You can find a good selection of charcoal grills at places such as osh and amazon. They have a better selection at amazon, so you check there instead though.
yes charcoal is simply carbon. Though other impurities may be present.
No. There's no element by that name. There is an element called "calcium", though.
Charcoal grills might be slightly more difficult to use, but they provide many benefits. Charcoal generates more heat than does gas, so a charcoal grills can get hotter. This gives the chef more options. Charcoal also gives meat a better, smokier flavor that many people prefer. Charcoal grills are also cheaper than gas grills, though they require more supplies.