For stamp terms you may not recognize, see the end of the gallery. Beads - Not sure, but they look great. Issued for the Day of the Stamp. Design is a Postman. Memorial series for Queen Astrid.
Beads are most likely pearls.
Girl on the beach playing a guitar. According to Scott they are shell. Beads - hanging from great hairdo. Honors the French jewelry and metal smithing industries. Beads - Hard to tell, but no doubt French.