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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?
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.
Type IIa diamonds make up 1–2% of all natural diamonds (1.8% of gem diamonds). These diamonds are almost or entirely devoid of impurities, and consequently are usually colourless and have the highest thermal conductivity. They are very transparent in ultraviolet, down to 230 nm.
Herkimer diamonds are double-terminated quartz crystals discovered within exposed outcrops of dolomite in and around Herkimer County, New York, and the Mohawk River Valley in the US. [ 1 ] [ 2 ] They are not diamonds ; the "diamond" in their name is due to both their clarity and well formed faces.
The key difference between lab-grown and natural diamonds is their origins: Natural diamonds take billions of years to form, and lab-grown diamonds can be created in a matter of weeks.
Fake diamonds are often indistinguishable from authentic diamonds to the naked eye. But it turns out that telling the difference between a fake diamond and a real diamond is easier than you thought.