If talking about "simulated" and NOT real synthetic / cultured / laboratory-grown diamond (which has the same properties of natural diamonds) I think the best in fire and brilliance is Moissanite, others are considered cheaper fakes.
'Best' is a bit of a relative term. Cultured, or lab grown diamonds, are available in multiple colors from multiple labs. I would note that currently very few *white* lab grown diamonds are available. D.NEA has made whites up to one carat and Apollo Diamonds has offered some up to 1/3 carat. Of the cultured yellow diamonds, the major sellers are Gemesis, D.NEA (was Adia), Takara, New Age Diamonds and Chatham. Takara's yellow diamonds seem to be the most consistently 'pure yellow', rather than the more common orange-yellow from the other labs. D.NEA has the largest selection of blue diamonds. Pink diamonds are available at TakaraDiamonds.com and a few other sites like DiamondsCultured.com (made by Chatham). I'll add some links to the various sites and you can research from there, as best is really partially dependent on what color you like and what type of cut you want. Diamond Culture, a new supplier as of October 2009 has a large selection of IGI certified yellow, pink and lime diamonds, all cut in Antwerp. Created-Diamonds.com is an online retailer of cultured diamonds produced by different labs.
Diamonds. He made his fortune at the diamond fields of Kimberley and founded the mighty De Beers Company which would become the world leader in the diamond trade.
Man-made diamonds are not considered natural because, by definition, a mineral must form by natural processes.
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.
Carbon atoms joined together in such a way that it is one of the hardest natural-mineral solids to exist.
Diamond Aura is the name of a SIMULATED diamond, NOT a synthetic diamond. Natural diamonds and synthetic (cultured) diamonds are identical in being made of pure carbon highly compressed with a hardness of 10. Cultured diamonds cost from 2/3 to 3/4 the price of natural diamonds. SIMULATED diamonds are NOT made of pure carbon. Cubic Zirconium (zirconium dioxide with hardness 8.5) and Mossanite (silicon carbide with hardness 9.25) are simulated diamonds and cost vastly less than natural or cultured diamonds. Diamond Aura stones have a hardness of 8.5, which suggests that they are cubic zirconium.
Simulated diamonds are also known as diamond simulants and include things like cubic zirconia (CZ), moissanite, and YAG. They can also include some natural clear gemstones like white sapphire, white zircon or even clear quartz. Simulated diamonds do not possess the chemical and physical properties of actual diamonds, so they generally sell for a relatively low cost. Source: http://www.goodmansjewelers.com/simulated-diamonds-vs-synthetic-diamonds/
Nea Diamonds, Gemesis, Chatham Jewelry, Takara Diamonds, Apollo Diamonds, Lucent Diamonds and Renaissance Diamonds are few diamond manufacturers selling man made diamond.
it is a pastry made of diamonds it is a pastry made of diamonds
Man made diamonds are chemically the same as natural diamonds.
A solitaire diamond is a single diamond. A diamond can be set as a solitaire. Since there is only one diamond, there are no multiple diamonds.
art made with diamonds!
Diamonesk diamonds are not real diamonds. They are stones that are made to look like real diamonds. They are a brand of diamond ring.
noAnother AnswerGrading simulated diamonds implies that there are grades. Often gem-stone-like substitutes for diamonds are fabricated from other minerals, or if man-made, composed of some combination of elements.Knowing the composition of the simulated stones may help you value them. But there does not appear to be a standard grading system for non-gem jewels.
Diamonds are carbon.
Man-made diamonds can be almost any colour, just like natural diamonds. The colour of a diamond will not be the sole definition of almost any colour of diamond.
Natural diamonds can be industrial diamonds or gemstone quality diamonds. Gemstone quality diamonds are worth more than industrial diamonds. If by 'industrial', you mean man-made, then a natural diamond will always be more valuable than a man-made diamond of equal carat weight, unless the natural diamond is not of gemstone quality.