What concept are diamond _ the difference between diamond and diamond

When it comes to 'diamond', general meaning understand is the imitation of a diamond. Diamond is actually to collectively, in imitation of a diamond and diamond is there are a lot of distinction. So what is the so-called 'diamond'? What is the difference between it with real diamond? Main look at the following simulation diamond kinds: 1, glass, glass into the fake diamond difference easily, because of its low refractive index, the flashing lights, not real diamonds last a little experience. And this kind of 'diamond' is often used to compare cheap jewelry. 2, synthetic spinel, it lacks diamond flickering lights, will it into 2 methyl iodide, its contour is fuzzy. But that the true diamond contour is clear. 3, synthetic sapphire: colorless transparent synthetic sapphire after thinking can also be used as a substitute for diamond. But it almost disappeared in the 'two methyl iodide, whereas true diamond on the edge of the diablo, very clear. 4, crystal and topaz: these two kinds of natural mineral transparent crystal, after thinking are similar to diamond, but lacked the diamond color bright fire. And they are 'heterogeneous body', and the diamond is the 'property', easy to distinguish with a polariscope. 5, zircon, before there were man-made cubic zirconia, zircon is the best diamond substitute. Zircon strong birefringence, namely it has two refractive index, and two large difference between the refractive index. Which leads to a very special optical phenomenon, when with a magnifying glass observation about good zircon edge surface gem, by its top surface can be seen at the bottom of the plane and ridge has obvious double. And diamond because of 'property' is, no one like a shadow. 6, cubic zirconia ( The 'Soviet diamonds') : this is the first by the former Soviet union launched the ideal diamond substitute or pretend to be, is a synthetic compound, no natural mineral. Due to the cubic zirconia in such aspects as refractive index, dispersion and natural diamond is very close, make it more difficult to distinguish after diamond ring. But its hardness is low ( 8. 5) The proportion of 1 for diamonds. 6 - 1. 7 times, up to 5. 6 - 6, and the thermal conductivity is far lower than the diamond, it is still available instrument accurately distinguish with the diamond. 'Diamond' besides glass is easy to distinguish, the rest of the 'diamond' in the main still should see burnish. In natural light, diamond brilliance is always 'diamond' imitation can't compare with. Recommend to legitimate businesses to buy, buy diamond should have a certificate of authority at the same time, the author recommend jewelry. Jewelry to start marketing mode of Chinese jewelry factory direct customers relying on its own international creative jewelry factory and global direct naked drill inventory resources, establish a diamond speed system of supply chain, leading diamond 'fast fashion'. The traditional stores selling drilling mode, jewelry, diamond directly from the manufacturer to your house, bring you a brand new 'international quality, the price of populist, personalization' diamond.