[
  {
    "type": "item_group",
    "id": "orichalcum_frame_break",
    "subtype": "collection",
    "entries": [ { "item": "orichalcum_lump", "count": [ 4, 6 ] }, { "item": "orichalcum_sliver", "count": [ 4, 6 ] } ]
  }
]