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Similarly, natural diamonds usually have minor imperfections and flaws, such as inclusions of foreign material, that are not seen in synthetic diamonds. Screening devices based on diamond type detection can be used to make a distinction between diamonds that are certainly natural and diamonds that are potentially synthetic.
In natural diamonds, there is typically little if any response to short-wave ultraviolet, but the reverse is true of synthetic diamonds. Some natural type IIb diamonds phosphoresce blue after exposure to short-wave ultraviolet. In natural diamonds, fluorescence under X-rays is generally bluish-white, yellowish or greenish. Some diamonds ...
For the diamond purists among us, however, this might come across as a little jarring: After all, what does this mean for natural or "real" diamonds, and can they really compare?
However, in reality most gem-sized natural diamonds are imperfect. The color of a diamond may be affected by chemical impurities and/or structural defects in the crystal lattice. Depending on the hue and intensity of a diamond's coloration, a diamond's color can either detract from or enhance its value.
Carbonado, commonly known as black diamond, is one of the toughest forms of natural diamond.It is an impure, high-density, micro-porous form of polycrystalline diamond consisting of diamond, graphite, and amorphous carbon, with minor crystalline precipitates filling pores and occasional reduced metal inclusions. [1]
De Beers, the world’s biggest producer of natural diamonds, has slashed its prices by 10% to 15%, Bloomberg reported. Blame man-made, or lab-grown, diamonds, for one thing. Other factors include ...
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