Medina's Jewel of Zon

Jewelry Jewel

Item Details

Utility 40.67
Bonus Level 21
Dyeable No
Sellable Yes
Tradeable Yes

Restrictions

Level Required 50
Usable By
All Classes

Magical Bonuses

Basic
Hit Points 40
Strength 15
Constitution 15
Quickness 16

Primary Ability

Damage Add Level 50
Charge (30 max)


Raw Item JSON

{
  "sell_value" : 40056,
  "requirements" : {
    "level_required" : 50
  },
  "bonus_level" : 21,
  "sources" : {
    "monsters" : {
      "normal_drop" : [ "Medina" ]
    }
  },
  "flags" : {
    "dyable" : false,
    "emblemizable" : false
  },
  "icon" : 115,
  "utility" : 40.666666666666664,
  "delve_text" : " \nMagical Bonuses:\n- Hits: 40 pts\n- Quickness: 16 pts\n- Strength: 15 pts\n- Constitution: 15 pts\n \nLevel Requirement: 50 Level\n \n \nCharged Magic Ability:\n- 30 Charges\n- 30 Max\nFunction: damage add\n \nTarget's melee attacks do additional damage.\n \nDamage: 11.3\nTarget: Self\nDuration: 30 sec\nCasting time: instant\n \n- This spell is cast when the item is used.\n \nCan use item every: 1:30 min\n \n \nBonus Level: 21\n",
  "slot" : 4,
  "abilities" : [ {
    "max_charges" : 30,
    "spell" : 3830,
    "magic_type" : 6,
    "power_level" : 50,
    "position" : 1
  } ],
  "artifact" : false,
  "material" : 0,
  "name" : "Medina's Jewel of Zon",
  "usable_by" : [ 0 ],
  "realm" : 0,
  "id" : 56960,
  "category" : 5,
  "use_duration" : 90,
  "bonuses" : [ {
    "type" : 4,
    "value" : 40
  }, {
    "id" : 3,
    "type" : 1,
    "value" : 16
  }, {
    "id" : 0,
    "type" : 1,
    "value" : 15
  }, {
    "id" : 2,
    "type" : 1,
    "value" : 15
  } ],
  "ability_tags" : [ "fn_dmg_add" ]
}
How is utility calculated?