dear Will
the large silver bead seems to have a large hole and is likely to be made to fit together with others bought one at a time to thread onto a fat bracelet or necklace chain, as part of the brand name ranges called Pandora or Troll beads.
The coral i can recognise as chinese - its bamboo coral- beige but dyed to appear coral. before you feel disappointed, this dyed coral is sparing the last remaining coral reefs from being annihilated, so its allowing precious coral to grow again...