I’ll be having it test as I doubt the authenticity now thank you everyone
There was/is a trend/ fashion for “floating” gemstones on a chain. The gemstone itself is laser drilled through so a loop can be attached.
I’ve seen advertisements for these “diamond drops“ necklaces / earrings. I think even Lightbox did some of this style a while back.
obviously drilling the hole renders the gemstone value to $?