Crystalized essence is an alchemy ingredient in The Witcher 3: Wild Hunt. It is not needed to craft anything but can be dismantled into monster essence.
It can be found as both regular random loot and from nekker monster nests, or purchased from the following merchants:
- Alchemist in the crematory near Oxenfurt Gate
- Blacksmith in Lindenvale
- Freya Priestess at the temple to Freya on Hindarsfjall
- Merchant in the roadside camp south of Kaer Trolde
- Merchant in Kaer Trolde Harbor
- Merchant at the sawmill south of Sund
- Merchant at the Isolated Hut on Hindarsfjall
- Wandering merchants in Skellige
- Yoana in Crow's Perch
It is also guaranteed on a few occasions during quests:
- Awarded for slaying the hym during Possession
- Dropped by at least one of the Crones during Bald Mountain
- Loot from skulls attached to rock walls in the poisoned valley during Through Time and Space