There is a faint possibility that they are south sea - I got some a bit like these in my last HK trip and called them pokemon pearls because some of them reminded me of pokemons (!) The pearl at 4-to 5cm especially with those bubbly bumps. And the satin lustre. can you take some more photos.
Is the metal a mix of 10 and 14 carat gold, not sure what you mean. It does look at least part handmade, with those wire cages for the pearls