Infused crystal is a crafting component in The Witcher 3: Wild Hunt that can be dismantled into infused shard. It is needed to craft:
Crafting Requirements 
It can be purchased from the following merchants:
- All armorers and blacksmiths, except the one at Ardaiso Quarry
- 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
It is a random drop from base game monster nests starting at level 20, and select few monsters:
- Ice giants during Tedd Deireadh, The Final Age
- Ice troll in Clan Tordarroch Forge
- Golem at Olevald Clearing
In the Blood and Wine expansion, it is also often found during treasure hunts, and in many guarded treasures and bandit camps around Toussaint.
Tips[]
Infused crystals are required to craft infused slyzard hide, which are required for grandmaster witcher gear sets.
- Two infused dust can be used to craft an infused shard, and two infused shards can be used to craft an infused crystal.