Czech beads, mother of pearl (sidef) and cotton. Not my pattern, find it on google doc, not signed, but I think it is Orsi's. It was a simple ending without beads. I put the beads to form a border on the bottom.
After this 3D trefoil-earrings, I tried another 3D model. It is 3D flower, two layers separate by beads. I like how it came out, and I will continue with this idea.