What wholesale actually costs here
Amber is traded by weight, so the honest way to quote is per gram against a diameter and a variety, not per piece against a photograph. A 12 mm bead carries roughly 3.4 times the material of an 8 mm bead, and across a 99-bead strand that difference is the entire commercial position of the product.
We publish an indicative per-gram structure by diameter so a buyer can model a range before asking for anything. It is labelled indicative because material batch and specification move it, and we would rather be checked than trusted.