I made both from Sterling Silver (unstamped because they are so tiny, but trust me, I'm a jeweler!)
Each stud is bezel-set with a 4mm round, genuine stone - one with minty green Chrysoprase and the other with a deep purple Amethyst.
Both have 20 gauge (0.8mm) wires bent into "L" shape (5mm x 5mm)
Have any questions? Contact the shop owner.