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{
 "loot_tables": [
   {
     "chest_type": "bronze",
     "gem_cost": 100,
     "min_items": 1,
     "max_items": 3,
     "loot": [
       {
         "item_type": "raw_material",
         "weight": 40
       },
       {
         "item_type": "refined_material",
         "weight": 30
       },
       {
         "item_type": "power_up",
         "weight": 15
       },
       {
         "item_type": "decoration",
         "weight": 10
       },
       {
         "item_type": "equipment",
         "weight": 5
       }
     ]
   },
   {
     "chest_type": "silver",
     "gem_cost": 500,
     "min_items": 2,
     "max_items": 4,
     "loot": [
       {
         "item_type": "raw_material",
         "weight": 20
       },
       {
         "item_type": "refined_material",
         "weight": 20
       },
       {
         "item_type": "power_up",
         "weight": 25
       },
       {
         "item_type": "decoration",
         "weight": 20
       },
       {
         "item_type": "equipment",
         "weight": 15
       }
     ]
   },
   {
     "chest_type": "gold",
     "gem_cost": 1000,
     "min_items": 3,
     "max_items": 5,
     "loot": [
       {
         "item_type": "raw_material",
         "weight": 10
       },
       {
         "item_type": "refined_material",
         "weight": 10
       },
       {
         "item_type": "power_up",
         "weight": 30
       },
       {
         "item_type": "decoration",
         "weight": 30
       },
       {
         "item_type": "equipment",
         "weight": 20
       }
     ]
   }
 ]
}