All of the earrings that are listed as having sterling silver earwires (or silver plate, in the case of the Prismatic Spectrum earrings) can get clip-ons instead.
We'll have that as a survey question at the end for anyone who pledged for an earring level.
If you pledged for a different level, but over pledged, and your other rewards include earrings, and you want clip-ons. Be sure to let us know and we'll take care of you.
Regarding clip-ons & the Gold (Au) earrings. If we can find gold screw clips, we would be comfortable making that switch, but standard clip-ons just aren't secure enough for us to feel comfortable putting them on a $3,500 pair of earrings.
Regarding clip-ons & the Copper (Cu) earrings. We're seeing if we can find copper clip-ons. If we can, then yes those will be available too. We'll keep this FAQ up to date if/when we know for sure.