Less than deep-UV illumination, CVD diamonds can even expose they grew layer by layer (like a stack of pancakes), a growth construction that is unique to diamonds with this growth system. "Actually, lab grown and pure diamonds are the one two items on the planet which share Mohs 10 https://podcasters.spotify.com/pod/show/carat2/episodes/Sustainable-Elegance-Exploring-Emerald-Cut-Lab-Grown-Diamond-Rings-with-Lily-Green-e2hj775