Glowing ore is a crafting component in The Witcher 3: Wild Hunt that is needed to craft glowing ore ingot.
It can be found as random loot, in the safe treasure during Novigrad, Closed City, or purchased from the following merchants:
- All armorers and blacksmiths, except the one at Ardaiso Quarry
- Alchemist at the Crematory near Oxenfurt Gate
- Armors and weapons merchants in Nilfgaardian Army Group 'Center' Camp
- Merchant in the boatyard south of Refugees' Camp
- Merchant at Calveit Watchtower
- Merchant at Coast of Wrecks
- Merchant in Ursten
- Merchant by the road west of White Eagle Fort
- Merchant at the sawmill northeast of Rannvaig
- Merchant at the Isolated Hut on Hindarsfjall
- Merchant in Mohrin Village
- Merchant in Stacheier
- Ofieri merchant at Upper Mill
Glowing ore may also be obtained by dismantling dimeritium shackles, glowing ore ingots, almost all Blood and Wine expansion witcher gear chest armors and swords (i.e. grandmaster level, but excluding Forgotten Wolf School Gear), and a few more craftable swords whose diagrams are found in Toussaint (those that have "Serpent" in their item IDs).