Abalone & “Mostacilla” beaded elastic bracelet stretch possible hematite new

Abalone centerpiece in this brand new stretchable bracelet. Purchased in Ecuador. Abalone looks bluer in this photo than really is. Must have picked up some lighting changes Brand new. Dark gray beads look like hematite. Not sure. Seller couldn’t tell me. Just kept repeating the term “mostacilla” which is locally used and means bead. She said that the abalone is called “nakar” in Peru. I have a few versions of these. Coming up in other listings. From a pet friendly home. The abalone bead is fairly heavy.