Hello Francocms, welcome to our forum!
Unfortunately the photos are not the best and you have not given us any sizes...but if I had to go with a hunch these are saltwater cultured pearls of rather low quality (as seen by the nature and amount of imperfections)...they might be Akoya pearls but not really sure. Some seem to have damaged nacre spots (worn out) and are baroqueish shaped, not well matched so I believe these might be baroque Akoyas from the 1970s or 1980's or Chinese Akoya from the 2000s.