Lunar, half moon minimal stud earrings made from carefully polished brass and sterling silver.
Small brass half circle lunar studs with set stone of your choice and sterling ear post. The third and fourth photos show these studs paired with an earring jacket back, available here as a set:
Stud details: 3/8" wide, stone is 3mm wide set in a sterling silver bezel cup.
Stone choice: Lapis, moonstone, labradorite, turquoise