Vintage Blue & White Pearl (?) Flower Earrings

Vintage Blue & White Pearl (?) Flower Clip-on Earrings. These are a vintage pair of pearl (?) flower earrings in the colors of sky blue & white. I'm not certain if they are glass, shell, pearl, etc. I want to say a shell or pearl. The clip has "Japan" stamped on it. Either way they are a beautiful pair of vintage clip-on earrings. They are like brand new and measure approximately 3/4" across.