Kate Spade Style Black Art Deco Earrings

These earrings have a kate spade flair, brand is unknown. Tightly fastened black gems generate an art deco floral pattern. Given everything I purchase is thrifted/second hand, I don't know the nature of the material so that's why I like to wear them a few days, get them wet while wearing them, etc to ensure that if purchased, they don't break or turn skin green!