GamerItems/src/main/resources/data/gameritems/advancements/raw_jeremium.json

{
  "display": {
    "icon": {
      "item": "gameritems:raw_jeremium"
    },
    "title": "reD?",
    "description": "Get a piece of raw Jeremium",
    "frame": "task",
    "show_toast": true,
    "announce_to_chat": true
  },
  "parent": "gameritems:omnium_armour",
  "criteria": {
    "requirement": {
      "trigger": "minecraft:inventory_changed",
      "conditions": {
        "items": [
          {
            "items": [
              "gameritems:raw_jeremium"
            ]
          }
        ]
      }
    }
  }
}