this is a lot lol but i got a lil good stuff
natural diamonds have unique fingerprint in growth structure,billion yrs old,derives from greek word "admas", in the middle ages they were known to have healing qualities, the first engagement with a diamond was in 1872 archduke of austria proposed to mary of burgundy.
synthetic cost 20% less then natural and is less strained in crystal struture.also they are lab made
in common they are both hard to break and can still have varies of colors then just clear