This is a remarkable piece. There were three of these constructions, all similar in format. However at least one was all amber, and one or both of the others are mixed glass and amber beads. The pectorals seem to have been attached to the chest via a fibula. (A very odd arrangement, I think.) From the fibula, the beads hang in vertical rows, held together by wide bronze spacing plates. I would guess that these pieces have been reconstructed, from whatever parts remain. Each one has been placed on a rendering that shows what they think would have been the missing parts. So that's why you see pictures of beads next to actual beads.

Remarkable! But not yet the best to come.

JDA.