Frost

A Frost Crystal, the rarest of the Frost materials

Frost (凍てつく, Itetsuku^?, lit. "Freezing") is a material type available in Kingdom Hearts,Kingdom Hearts II, and Kingdom Hearts 358/2 Days. Frost materials contain the essence of ice, and are colored aqua.

Drops

Frost Shard: Blue Rhapsody (12%), White Mushroom (100%)^[1], Bambi (40%/60%)^[2]
Frost Gem: Sea Neon (4%), Sheltering Zone (8%), White Mushroom (10%/40%)^[3], Bambi (30%)^[4]

Kingdom Hearts Final Mix introduced the Frost Stone, dropped only by the Grand Ghost.

In Kingdom Hearts II Final Mix, a Frost Crystal can be found in a chest at the Cavern of Remembrance: Depths.

Frost Shard: Skater Bomb, Bubble Beat, Large Armor, Icy Cube, Snowy Crystal, Ice Cannon, Avalanche (During Missions 15-61)
Frost Gem: Blizzard Plant, Skater Bomb, Snowy Crystal, Ice Cannon, Avalanche (During Missions 51-72)
Frost Crystal: Dire Plant, Bubble Beat, Icy Cube, Snowy Crystal (During Missions 73-93)

Frost materials are used to synthesize the following items:

^ The White Mushroom drops a Frost Shard if a Blizzard spell is the last of three different spells cast on it.
^ At Wonderland, Bambi drops a Frost Shard 40% of the time the second time his gauge is filled, and 60% of the time the third time his gauge is filled.
^ The White Mushroom drops a Frost Gem 10% of the time if a Blizzard spell is the last of three different spells cast on it, and 40% of the time if all three are a Blizzad spell.
^ At Wonderland, Bambi drops a Frost Gem 30% of the time the third time his gauge is filled.
^ The Frost Shard is buyable for 100 Munny once 30 have been deposited.
^ The Frost Stone is buyable for 200 Munny once 25 have been deposited.
^ The Frost Gem is buyable for 400 Munny once 20 have been deposited.