CORO vintage amethyst(glass) earrings screw on

Estate Jewelry, not sure if they are made of crystals or glass. Pricing it as glass. There are smaller lighter beads surrounding the main darker color one. Some signs of wear Smoke and pet free home Reasonable Offers will be seriously considered. Please feel free to ask all questions before purchasing. As I haven’t figured out the return part. Please note that all measurements are approximate. More measurements will be provided (with photos), upon request, by adding to the listing.