This item is acquired in-game. See its sources below.
An Epic Gem, item level 50, requires level 39, binds when picked up.
First seen in build 12.0.7.68887 (Midnight (patch 12.0.7)).
Felborne Energist's Gem adds Relic Enhancement when socketed. See Felborne Energist's Gem on the gem list for every socket it fits.
Built from the World of Warcraft client build files and recorded Auction House snapshots.
Felborne Energist's Gem uses icon file 510992, which 5 other items also use. The 2 closest by item ID:
Ruthless Gladiator's Cuffs of Accuracy ID 72319 · Armor - Cloth · item level 37Ruthless Gladiator's Cuffs of Accuracy ID 70363 · Armor - Cloth · item level 37Blizzard numbers items as they are created, so the named items next to ID 140076 (140071 to 140080) were usually added in the same batch as Felborne Energist's Gem: the same quest line, zone, vendor or reward set.
First Page of the Book of Shadows ID 140071 · Gem · item level 50 "The texts the demons are sharing with the Felborne should be used very carefully."
Headpiece of the Elunian Cycle ID 140072 · Gem · item level 50 "Entrusted to Priestess Tyrande since the War of the Ancients."
Khadgar's Pocket Warmer ID 140073 · Gem · item level 50 "An ancient elemental core, useful for mundane purposes while finding the proper way to utilize its magic."
Sin'dorei Blood Gems ID 140074 · Gem · item level 50
Petrified Ancient Bark ID 140075 · Gem · item level 50
Goldleaf Arcwine Phial ID 140077 · Gem · item level 50
Crystallized Leypetal ID 140078 · Gem · item level 50
Stormforged Fist ID 140079 · Gem · item level 50
Everchill Pearl ID 140080 · Gem · item level 50The raw ItemSparse values for item 140076 in the current client build.
Read from the World of Warcraft client build files: Item, ItemSparse, Lock, Holidays, AreaTable and CollectableSourceVendor.
TheWoWDB