bead
Beads
Small and usually round balls made of glass or stone et cetera strung with others for example in a necklace.
Definition source: Chambers 21st Century Dictionary
What kind of jewellery did people wear in the Middle Ages (NL)?
Well, that depended on who you were. There were large differences in classes, between farmers, civilians, clergymen and the nobility.
Often jewellery was about your profession (if you were a man)...