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2. Are lab-grown diamonds 'worthless'? Experts weigh in as ... - AOL

   www.aol.com/news/lab-grown-diamonds-worthless...

   “If you buy a lab-grown diamond, leave your money at the door,” one person wrote. ... “As far as ethics, the natural diamond industry has made enormous steps to be good citizens of the world ...

3. Dresden Green Diamond - Wikipedia

   en.wikipedia.org/wiki/Dresden_Green_Diamond

   The stone's unique apple green color is due to natural exposure to radioactive materials, as the irradiation of diamonds can produce changes in color. The Dresden Green Diamond has been used to compare natural versus lab-produced green diamonds — it is hoped that it can be used to devise a test to differentiate between naturally green diamonds, which are quite rare, and lab-produced ones.

4. Diamond (gemstone) - Wikipedia

   en.wikipedia.org/wiki/Diamond_(gemstone)

   A diamond with facets cut only a few degrees out of alignment can result in a poorly performing stone. For a round brilliant cut, there is a balance between "brilliance" and "fire". When a diamond is cut for too much "fire", it looks like a cubic zirconia, which gives off much more "fire" than real diamond. A well-executed round brilliant cut ...

5. Diamond - Wikipedia

   en.wikipedia.org/wiki/Diamond

   The toughness of natural diamond has been measured as 50–65 MPa·m 1/2. [contradictory] [32] [33] This value is good compared to other ceramic materials, but poor compared to most engineering materials such as engineering alloys, which typically exhibit toughness over 80 MPa·m 1/2. As with any material, the macroscopic geometry of a diamond ...

6. Diamonds as an investment - Wikipedia

   en.wikipedia.org/wiki/Diamonds_as_an_investment

   Since the 1950s, techniques can produce gem-quality diamonds of essentially any desired chemistry in sizes up to about 1cm. [6] Although some manufacturers do label their synthetic diamonds with serial numbers, there is no guarantee that a given diamond is not man made, although sometimes an unnatural chemical composition or pattern of flaws may suggest a diamond is synthetic.

7. Synthetic diamond - Wikipedia

   en.wikipedia.org/wiki/Synthetic_diamond

   Lab-grown diamonds of various colors grown by the high-pressure-and-temperature technique. A synthetic diamond or laboratory-grown diamond (LGD), also called a lab-grown diamond, [1] laboratory-created, man-made, artisan-created, artificial, synthetic, or cultured diamond, is a diamond that is produced in a controlled technological process (in contrast to naturally formed diamond, which is ...