|They could be Bakelite (phenolic resin)|
|Re: beads ID, please -- nishedha||Post Reply||Edit||Forum||Where am I?|
Can you get access to the holes & try the reamer / sniff test? You have some beads that I tested when I visited you - that are definitely Bakelite, so you can use them for odor comparison.
The other test you can run is to try to stick a hot pin or needle (heat to red hot) into the bead (use an inside surface). If the pin goes into the surface easily, you have a newer plastic, either acrylic or polystyrene. If the needle goes in a tiny bit and leaves white crumbs in the hole (use magnification) then you have fairly new polyester. If the needle won't go in at all, and leaves a tiny black mark, you have Bakelite. There are other possibilities but I haven't seen this type of large bead in other plastics. But that doesn't mean there aren't some out there.