Are they drilled or do that have a hole in the center? If they are drilled, I would say to suspend them on a wax paper covered toothpick. The resin will drip off the bead and will not stick to the wax paper.
If they’re not drilled, you could try the wax paper approach, but they will sit in a puddle. I would probably use our resin gloss sealer spray instead. Spray one side, then move them around, and spray again. (Allow to dry in between layers.)