Tried the black light…no glowings!! Thank you for your expertise and quick responses. I will wear my necklace with pride and not worry about damaging/losing an expensive heirloom! I’ve marked this as resolved. You may see me again with other things I’ve inherited!

I will look forward to seeing your items !! If no glow you can assume its a plastic or resin of some type !! Still nice though and will be great to wear !!My opinion is,, clothing and jewelry should be fun,, not something you have to worry about constantly !!

Will look for an update later !!

I’m afraid to do the hot pin test. Would a jeweller do that? I’m a newbie, can’t you tell? I’m attempting a couple more pics of the back. Hard to take good ones with cell phone…hopefully one of these works for you. If it’s bone is there any special care for it?
I keep it in a Lladro Collectors Society key case…that’s how it came from my relative.

Thanks for the pics !! Can you feel those striations or ridges ?? About 95% sure this is a cast resin piece !! They are making many things from a mixture of resin and bone powder !! This has a slick shiny look and does not have the coloration within the striations that you normally see with a bone carving !! Look at the bottom edge and see if it has the same shiny look as the main part !! That would tell me that it is resin !! Both bone and ivory will age and have a patina over the years !! This has none !! You can also check it with a black light !! Bone and Ivory will glow a blue or blue white if I remember correctly !!