Vintage White Shell Fan Earrings

Got these vintage-style white shell earrings. They have a cool ribbed fan shape with some gold-tone accents between the ridges. They're definitely used and have some scuffs and wear on the white finish as you can see in the photos, but they still have that classic 80s or 90s vibe if you're into that. Not sure of the exact brand, just some fun costume jewelry pieces.