[ericfranklin]

Diamond growers try their best to keep out impurities and imperfections. Elemental impurities do add color (nitrogen=yellow, boron=blue), same as mined diamonds, and faults and inclusions do naturally happen in the process. However, at an atomic level, they are different than inclusions and imperfections in mined diamonds.

As a producer, I don't see any incentive to make them imperfect on purpose, yet still distinguishable from mined diamonds. All larger diamonds intended for gemstones come with independent grading reports, which will still identify it as grown regardless of presence or lack of impurities and imperfections.

While not technically correct, some of the advanced detection equipment can be thought of like looking at growth rings on a tree. You (probably) can't replicate the growth rings of a 200 year old tree in a 5 year old tree, yet both are perfectly valid sources of wood (sustainability, etc. aside).