An appreciation of ethnic jewellery and adornment
thanks for adding this question, as there has not yet been a response here , may I suggest an excellent bead forum.
You are welcome to mention that I suggested the site, people are very knowlegable and friendly there.
The patina on your beads will be metals which have oxidized from within the glass, I am sure that someone at the beads forum will help you with the info.
Another suggestion, you may wish to contact Jamey Allen through the member list of this forum , he is a world class expert on beads and was involved in museum collections in the USA .