Clay jewelry is fragile, but with special care it can have a long life. Try to keep your earrings in the original packaging when not in use and separately from other jewelry that may scratch or mark the surface.
Most of the pieces are made of polymer clay, which makes them lightweight. He always tries to handle them with clean hands. If your earrings get a little dirty (from handling or makeup), it's easy to clean, use a little mild dish soap, water, and scrub gently with a small brush (makeup comes off easily with acetone).
When you travel, pack each piece separately in its box and, if possible, take them with you. Avoid the pressure of being packed between clothes or other items.
P.S. For extra shine rub a piece of light colored flannel over the surface of the jewel.