how are cubic zirconiums & artificial diamonds made?
442382
Artificial diamonds have the same chemical properties as real diamonds. The term artificial is misleading. But cubic zirconiums are not the same as the real thing.
398282
The mineral graphite is made up entirely of carbon atoms. Graphite is found in your pencil "lead". Many students tend to believe that pencils actually contain real lead. This is not true. They used to use real lead until everyone realized that it makes you sick.\n\nDiamonds are also made up completely of carbon. It was just luckier than graphite. It went under lots of heat & pressure for a very long time. Why is this lucky? Because it turned into a diamond. Diamonds are used for jewelry of course but crushed diamonds are also used on the ends of drill bits. This is because diamonds are the hardest of all minerals. Diamond drill tips can drill through any type of rock.\n\nGood luck with the report!
96717
See link\n\nhttp://chemistry.about.com/cs/howtos/ht/buildavolcano.htm
976972
Hello there,\n\nAnswer is zirconium.\n\nYou can take this to the bank.
542643
People useally know that Carbon exist in forms of graphite and diamond. graphite and diamond are the two naturally occuring forms of carbon.  However back in 1985, Robert Curl, Harold Kroto and Richard Smalley, were able to create third allotrope of carbon, Buckminsterfullerenes also known as Buckyball using Using laser evaporation of graphite!  The structure of C60 is a truncated icosahedron, which resembles a round soccer ball of the type made of hexagons and pentagons, with a carbon atom at the corners of each hexagon and a bond along each edge.\n\nSince its invention/discovery, much research has been done to create more allotropes of carbon.  The nano technology you hear today has its roots in discovery and concepts of buckyball.
109383
You can't lab grow a diamond. They may be really close to the real thing, they're just flawless if really well made.\n\nIt's like lead crystal versus glass. Most wine glasses are made of glass, while a few are lead crystal. Does it really matter? no. but when somebody asks you where you got your ring which sounds nicer? crystal or glass?
7547
how do you think they cut diamonds?\n\nthey're CLEAVED. If you hit a diamond at a certain angle it will cleave off and break. If you hit it with enough force, yes it will shatter.\n\nDiamonds are the hardest substance on earth. Hardness and resistance to compressive forces are two totally different types of things. \n\nI can smash both a diamond and a rubber ball with a very high force. If the rubber ball does not shatter and the diamond does, does that mean it's stronger then the diamond? No. It just means that it can wihtstand compressive forces better.
881405
1. A diamond is a specific type of crystal form of Carbon (contrary to what some people say and what some have answered:  a diamond was NEVER coal -- the only similarity is that they both contain carbon.)\n2. You cannot "make" a diamond out of a crystal.\n3. You can try to cut a crystal to maybe resemble a cut diamond, but no one would ever confuse the two.\n4. Crystals have certain alignments of the crystal facies along which the crystal will split -- it is along these facies that an expert will "cut" a crystal to get a specific shape.
508527
Yes, a black di<b>a</b>mond is a real diamond. It is just has some other mineral in with it, that is what gives it the black color. The Canary diamonds, a yellow tinged diamond, have a similar property.\nALSO. Kimberlite ore, a substance often found around diamonds, is black. If this a a rock that you actually have, then you may have a piece of kimberlite.
863045
Life would be unrecognizable. Diamonds are the corner-stone (sorry for the pun) of modern high tec industry. They are used in everything from making cars to producing contact lenses, from heavy industry to neuro-surgery. In some applications they can be replaced by other hard materials but the equipment has to run slower and it wears out in a fraction of the time. All in all  much of what we  regard as "normal" today would not be here without diamond technology.
93827
Diamond. It is pure carbon.
74778
Natural Diamonds \nNatural diamonds are classified by the type and quantity of impurities found within them. \nType Ia - This is the most common type of natural diamond, containing up to 0.3% nitrogen. \nType Ib - Very few natural diamonds are this type (~0.1%), but nearly all synthetic industrial diamonds are. Type Ib diamonds contain up to 500 ppm nitrogen. \nType IIa - This type is very rare in nature. Type IIa diamonds contain so little nitrogen that it isn't readily detected using infrared or ultraviolet absorption methods. \nType IIb - This type is also very rare in nature. Type IIb diamonds contain so little nitrogen (even lower than type IIa) that the crystal is a p-type semiconductor. \n\nSynthetic Industrial Diamonds \nSynthetic industrial diamonds are produced the process of High Pressure High Temperature Synthesis (HPHT). In HPHT synthesis, graphite and a metallic catalyst are placed in a hydraulic press under high temperatures and pressures. Over the period of a few hours the graphite converts to diamond. The resulting diamonds are usually a few millimeters in size and too flawed for use as gemstones, but they are extremely useful as edges on cutting tools and drill-bits and for being compressed to generate very high pressures. (Interesting side note: Although used to cut, grind, and polish many materials, diamonds aren't used to machine alloys of iron because the diamond abrades very quickly, due to a high-temperature reaction between iron and carbon.) \n\nThin Film Diamonds \nA process called Chemical Vapor Deposition (CVD) may be used to deposit thin films of polycrystalline diamond. CVD technology makes it possible to put 'zero-wear' coatings on machine parts, use diamond coatings to draw the heat away from electronic components, fashion windows that are transparent over a broad wavelength range, and take advantage of other properties of diamonds.
82534
I have no idea how lol... My wedding and engagment rings are made out of titanium.. I would suggest contacting a jewellery store and asking for their suppliers info.. You could probably get the answers you need there
276314
Diamonds are almost pure carbon with a few trace elements that give them color.  Coal is a complex hydrocarbon compound of which carbon is only a part.  Synthetic diamonds are made from graphite, another form of carbon, using heat and pressure.  Burning is rapid oxidation.  Diamonds do not burn at anything resembling a reasonable kindling  temperature if at all.  The carbon atoms in diamonds are so tightly bound to each other that it is very difficult to combine them with oxygen.
434342
The manufactures take a couple of lasers (2-3), each laser not having enough heat/energy to melt the crystal. Then they cause the lasers to intersect at each point that they want one of those little bubbles to appear and where the lasers intersect they add their energy together and melts the crystal. the placement of each dot is controlled by a 3-d graphics design inside of a computer.
10944
No, Diamond is the hardest material on earth, and carborundum is a diamond stimulant (tries to simulate the appearance of diamond).\n\nIn fact, diamond is three times harder than carborundum.\n\nCarborundum, a trademark name for Silicon carbide manufactured as an abrasive, is a ceramic compound of silicon and carbon (also known as moissanite).\n\n"Most silicon carbide is man-made for use as an abrasive (when it is often known by the trademark carborundum), or more recently as a semiconductor and moissanite gemstones. The simplest manufacturing process is to combine sand and carbon at a high temperature, between 1600 °C and 2500 °C."
909392
Crystal "defects" can be due to imputities. This is common with diamonds.