Crystals

Crystals are a loose loot exclusive to Shadow Raid. Interacting with the book and then securing all four crystals within ~20 seconds will award the badge. Crystals also appear in the Nightclub heist, inside the Manager's office, however you are unable to interact with them, and if the heist goes loud, they become dark and transparent and eventually disappear.

Value
Its base value is on, increasing by  per difficulty.