Vintage Miriam Haskell Signed Green Jade Stone Drop (Faux Screw On Clip Earrings

This is a pair of awesomely cool vintage signed Miriam Haskell earrings. They are screw on. I don't know what this stone is.... They are not uniform, and I believe they are actual stone, not manufactured. I put a black light on them, and they appear purple under that. The stones have imperfections, which adds character to me. Please see the pictures as they are part of the description.They have some age wear, but all beads are very secure. There are a couple of spots on the backside of the gold, as you can see in pictures.If you have any information about these, like year manufactured or type of stone, please message me. I tried doing an image search and couldn't find any like them. Please feel free to ask questions, and I will do my best to answer them.I have not cleaned them as I do not want to damage them in any way, so I will leave that up to you. Probably a professional clean would be best unless you know what you are doing, which I do not. They look awesome now, so I can only imagine when they are professionally cleaned.They measure approximately 2" long.