[who_would_fardels_bear]

Lab grown/created diamonds and other precious stones are supposed to be marked as such ... to avoid any unnecessary whacking.

I believe they use a fine laser to etch a tiny "lasermark" onto the stone that can't be seen when seated in a ring or pendant.

[grey_whiskers]

God dann autocorrect.
I typed deBeers and without telling me it corrected to to seVEred or whatever.
Note the 1st line in this post, hint hint.