The game's collection data lists Gloaming Sark as sold by 2 vendor NPCs in Terokkar Forest. The first vendor stands at 49.8, 46.6 on the Terokkar Forest map.
Vendor NPC, zone and position come from the client's collection source tables (CollectableSourceInfo and CollectableSourceVendorSparse); coordinates are the in-game map readout.
Build history
First seen in build 3.80.2.69874 (Wrath of the Lich King).
In Wrath of the Lich King it is item level 272, requires level 80 and sells to vendors for 13g 50s 72c. In MoP Classic it is item level 271, requires level 80 and sells to vendors for 13g 50s 72c.
Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
How Gloaming Sark Compares
Who It Suits
Leather is the armor type Demon Hunter, Druid, Monk and Rogue wear. With Agility or Intellect, Gloaming Sark suits Assassination, Outlaw and Subtlety Rogue; Brewmaster, Mistweaver and Windwalker Monk; Balance, Feral, Guardian and Restoration Druid; Havoc, Vengeance and Devourer Demon Hunter.
Transmog Sets
Gloaming Sark is part of the transmog set Shadowblade's Battlegear (Rogue only). The other 16 pieces:
1 other item in the current build is also called Gloaming Sark. Same-name entries are usually a different rank, faction, quest stage or reward track of the same object.
Blizzard numbers items as they are created, so the named items next to ID 54561 (54556 to 54566) were usually added in the same batch as Gloaming Sark: the same quest line, zone, vendor or reward set.