Bloodstone of the Betrayers

Jewelry Jewel

Item Details

Utility 55
Bonus Level 28
Dyeable No
Sellable Yes
Tradeable Yes

Restrictions

Level Required 49
Usable By
All Classes

Magical Bonuses

Basic
Hit Points 40
Dexterity 15
Parry 4
Rejuvenation 3

Primary Ability

Damage Shield Level 49
Charge (30 max)


Raw Item JSON

{
  "sell_value" : 37719,
  "requirements" : {
    "level_required" : 49
  },
  "bonus_level" : 28,
  "sources" : {
    "monsters" : {
      "normal_drop" : [ "Orylle" ]
    }
  },
  "flags" : {
    "dyable" : false,
    "emblemizable" : false
  },
  "icon" : 114,
  "utility" : 55.0,
  "delve_text" : " \nMagical Bonuses:\n- Parry: 4 pts\n- Rejuvenation: 3 pts\n- Dexterity: 15 pts\n- Hits: 40 pts\n \nLevel Requirement: 49 Level\n \n \nCharged Magic Ability:\n- 30 Charges\n- 30 Max\nFunction: damage shield\nDamage: 5.1\nTarget: Self\nDuration: 20 sec\nPower cost: 33\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: 28\n",
  "slot" : 4,
  "abilities" : [ {
    "max_charges" : 30,
    "spell" : 3783,
    "magic_type" : 6,
    "power_level" : 49,
    "position" : 1
  } ],
  "artifact" : false,
  "material" : 0,
  "name" : "Bloodstone of the Betrayers",
  "usable_by" : [ 0 ],
  "realm" : 0,
  "id" : 23880,
  "category" : 5,
  "use_duration" : 90,
  "bonuses" : [ {
    "id" : 8,
    "type" : 2,
    "value" : 4
  }, {
    "id" : 88,
    "type" : 2,
    "value" : 3
  }, {
    "id" : 1,
    "type" : 1,
    "value" : 15
  }, {
    "type" : 4,
    "value" : 40
  } ],
  "ability_tags" : [ "fn_dmg_shield" ]
}
How is utility calculated?