Here's a portrait of Kunigundus von Heimbach (born 1552 in Questenberg) by our old friend Bartholomeus Bruyn the Elder, who did a lot of such portraits:
This lady, painted in 1528 by "The Master H.B. with the Griffin Head" (Meister H B mit dem Greifenkopf), also has a rosary hanging from her belt:
Here's another one by Bruyn, dated around 1542:
And another (anonymous artist this time):
This one might be silver, it's hard to tell: the beads are round and photograph rather dark. They could also be jet or black glass.
And completely different from all the above, another portrait dated 1543, this one by Willem Key: