Perhaps you can look at your existing collection to see which one can complement existing pieces.
Are you more of a necklace or earrings person?
Just based on the pieces themselves, I prefer the magic necklace to the 2 motif white mop earclips. Reason being, I prefer the 2 motif earclips to be of different stones or pave / stone combination to show the contrast.
The contrast of the different stones in the magic necklace would be the deciding factor.
. I stuck to the light blue version instead. But I am so delighted to come across not one but two rare RdN.