The stuff in the picture looks pretty cool. They're saying it's a treasure trove of non precious metal items, something a sorcerer would have, but the words got artistically compressed on the way to the press release. Supposedly the artifacts belonged to a slave because there was no gold items and the quality of the amber and other beads indicates it was the house of an important person. The slave had good connections, or it was someone with a discerning eye, or when something broke and lost some pieces (all the pieces would be easy to fix) it got handed down somewhere down the ladder, or perhaps it was just some kid's "baseball card" collection.