Jewel of the Dread-stalker

Jewelry Jewel

Item Details

Utility 83
Bonus Level 38
Dyeable No
Sellable Yes
Tradeable Yes

Restrictions

Level Required 50
Usable By
All Classes

Magical Bonuses

Basic
Dexterity 12
Stealth 3
Celtic Dual 4
Envenom 4
Critical Strike 4

Primary Ability

Direct Damage Level 50
Charge (30 max)


Raw Item JSON

{
  "sell_value" : 40056,
  "requirements" : {
    "level_required" : 50
  },
  "bonus_level" : 38,
  "sources" : {
    "monsters" : {
      "normal_drop" : [ "Possessive Spirit" ]
    }
  },
  "flags" : {
    "dyable" : false,
    "emblemizable" : false
  },
  "icon" : 115,
  "utility" : 83.0,
  "delve_text" : " \nMagical Bonuses:\n- Envenom: 4 pts\n- Critical Strike: 4 pts\n- Celtic Dual: 4 pts\n- Stealth: 3 pts\n- Dexterity: 12 pts\n \nLevel Requirement: 50 Level\n \n \nCharged Magic Ability:\n- 30 Charges\n- 30 Max\nFunction: direct damage\n \nDamages the target.\n \nDamage: 95\nTarget: Targeted\nRange: 1500\nCasting time:      4.0 sec\nDamage: Energy\n \n- This spell is cast when the item is used.\n \n \nBonus Level: 38\n",
  "slot" : 4,
  "abilities" : [ {
    "max_charges" : 30,
    "spell" : 3728,
    "magic_type" : 6,
    "power_level" : 50,
    "position" : 1
  } ],
  "artifact" : false,
  "material" : 0,
  "name" : "Jewel of the Dread-stalker ",
  "usable_by" : [ 0 ],
  "realm" : 0,
  "id" : 42640,
  "category" : 5,
  "bonuses" : [ {
    "id" : 117,
    "type" : 2,
    "value" : 4
  }, {
    "id" : 118,
    "type" : 2,
    "value" : 4
  }, {
    "id" : 110,
    "type" : 2,
    "value" : 4
  }, {
    "id" : 19,
    "type" : 2,
    "value" : 3
  }, {
    "id" : 1,
    "type" : 1,
    "value" : 12
  } ],
  "ability_tags" : [ "fn_direct" ]
}
How is utility calculated?