This is genuine sea glass from Washington state, made into mini dangle earrings on sterling silver posts. The glass is maybe a bit light to be called kelly green, but it isn't quite lime green either.
Sea glass is created when discarded human-made glass is tumbled in the waves & gets polished by stones, sand & other items. This glass was beach combed then drilled for jewellery. Thank you to nature for recycling out garbage!
Each earring dangles over half an inch (16 mm) from the bottom of the sterling ball post.