[0cf8612b2e1e]

I have read that the distinguishing feature is that natural diamonds have flaws. Entrapped dirt or what have you that is not found in the sterile environment of the synthetic ones.

[OJFord]

Maybe a specialist could tell a natural, formed over thousands of years, flaw from a lab-grown flaw, but really I think it's more like you can get a better grade from a lab (and especially with consistency, frequency, at a much lower price due to being rare to find naturally occurring). i.e. you can get flawed and coloured lab-grown diamonds too. (A mix of taking less care/time, older equipment, and binning the results like silicon wafers I assume.)

[Tao3300]

I worked for QVC a million years ago and the Diamonique they sold at the time was super clear and bright compared to authentic diamond.

[zeitgeistcowboy]

I bought a yellow lab grown diamond for my wife's wedding ring and with a jewelers loupe you can see the flaws in it. It looks like dirt.

[hinkley]

Like honey, the inclusions are the only thing that distinguish it from counterfeit.

[0cf8612b2e1e]

Well, I am definitely one of the 10,000 because I just started reading about the counterfeit honey market.

[Tao3300]

Rubies and sapphires are just different flavors of impure corundum.