| Hi Jeremy,
Although these particular ones look awfully like Chinese freshwater cultured button studs to me, too, there are indeed nacreous pearls to be found in both the Baltic and North Sea. Some archaeologists argue that the so-called Kjökkenmöddinger (shell piles) along the Scandinavian shores are actually from pearl fisheries rather than mussel feasts owing to the fact that nacreous shells are rarer than non-nacreous ones and the shells in the Kjökkenmöddinger are almost exclusively nacreous.
Zeide |