Fingers of Frost
15% chance to Freeze Enemies which are Chilled
25% increased Cold Damage
20% increased Effect of Cold Ailments 
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 SupportHypothermia SupportCold, Support
Mana Multiplier: 120%Requires Level 31Supports any skill that deals damage.Per 1% Quality:123Supported Skills have 1.5% increased Chill Duration on EnemiesSupported Skills have +1% chance to Freeze Enemies which are ChilledEnemies Frozen by Supported Skills have -0.2% to Cold ResistanceSupported Skills deal (20-39)% more Damage with Hits and Ailments against Chilled Enemies
Supported Skills have +10% chance to Freeze Enemies which are Chilled
Supported Skills have 20% increased Effect of Chill on Enemies
Supported Skills deal (20-39)% more Cold Damage Over TimeThis is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket. support gem.
- Mark_GGG (November 13, 2012). "Mechanics thread". Official Path of Exile Forums. Retrieved January 4, 2015.