Hi there, I sell vintage on Etsy and am looking for some advice in dating a necklace, which is proving rather tricky! I usually sell clothing so jewellery is not my specialist area! I have asked some sellers on Etsy who have offered a variety of eras from the 30s/40s to the 80s. I have not tested the plastic yet but a few sellers have mentioned that it looks like bakelite or lucite. I wondered if there are any plastic jewellery experts who might be able to help? I have posted pictures on my facebook page: [link removed by admin] If you need any more pictures, just let me know! Thanks so much for your help. I'm looking forward to hearing more advice and finding out more about this necklace.