Pillow Bead Necklace Maker

I don’t see many of these, and thus I am not familiar with them. I thought it unusual that there was a flower stamped pattern on the back and an onyx setting in the front?? Is this normal or has it been restrung wrongly? Hallmark help as well. These don’t appear in any of my resources. Thanks in advance!!

I have several necklaces that have different stones on either side so you can get two looks, probably what this necklace maker did.

By the way if is gorgeous, a real find!