i purchased the first necklace a few years ago in a London antique market i don't remember exactly how much i paid but it was certainly under £100.- its in my book.
the dealer wasn't interested in what any of the beads were.
they are from several different ancient and antique origins, put together most likely for tourists during the mid 20th C.

also in my book is this choker of ethnic-looking metal links with a surprising mix of ancient glass, banded agate, etc dangly elements and drop-shapes- also much under £100- if the beads were separated they would be easier to identify as well.
The price asked has no relation to their value and relative rarity.