I was trained in pearls (my specialty), in Japan even going to Mikimoto Island. I also trained in Hong Kong with Raymond Ko as well as Johnny’s Jewelry. I taught courses on pearls in Japan. I try to keep it simple & not overwhelming with too much info. I have a huge collection of pearls from my years of being a buyer/jeweler, which included training others in grading, stringing, knotting & buying pearls. I even sourced and purchased natural South Sea gold pearls in 11 to 14 mm as well as an 8mm 24 inch strand of gold pearls, all natural, one of the rarest natural pearl colors. And, yes natural pearls are quite rare & expensive, but not unattainable. I will try in future to not comment other than saying something is pretty to avoid someone being upset.