See also astroturf campaigns. However in some sense all of these examples are about deception (in some real or imagined sense). On second thought, the natural/a

See also astroturf campaigns. However in some sense all of these examples are about deception (in some real or imagined sense). On second thought, the natural/artificial dichotomy in diamonds, food &c. is indeed very similar, it is about deception of getting a product that conforms to some ideal of natural. Compare the situation between food and tires, nobody would complain about non-organic tires, I wouldn't be surprised if most people demand non-organic tires even if there would be a plant based substitute. In food it is just the exact opposite.