Fingers of Frost
10% chance to Freeze Enemies which are Chilled
12% increased Cold Damage
10% increased Effect of Chill
+10% to Cold Damage over Time Multiplier 
It also causes frozen enemies to become chilled as they unfreeze. On a typical cold damage hit that freezes a monster, the monster is also chilled from the cold damage. The chill duration starts concurrently with the freeze duration and normally expires briefly after the monster becomes unfrozen. With this passive, the "full" chill duration effectively starts after the enemy unfreezes. This is accomplished by adding the freeze duration to the chill duration with both effects beginning simultaneously. As such, the enemy is still considered chilled while frozen, which is important to note with the Hypothermia support gem.
- Mark_GGG (November 13, 2012). "Mechanics thread". Official Path of Exile Forums. Retrieved January 4, 2015.