Twilight

Twilight is a material type available in Kingdom Hearts II. Twilight materials contain the essence of twilight, and are colored white. Once all Twilight materials are obtained the Moogle will reward Sora with a Serenity Crystal.

Design
Twilight materials are represented by white jewels and have an Elemental material structure.

The material's name simply refers to the "essence of twilight" it contains.

Kingdom Hearts II

 * Twilight Shard: Dusk (10%), Gambler (12%)
 * Twilight Stone: Dancer (12%)
 * Twilight Gem: Assassin (12%)
 * Twilight Crystal: Sorcerer (12%)

Kingdom Hearts III

 * Twilight Shard: Dusk

Kingdom Hearts II
Twilight materials are used to synthesize the following items:
 * Mythril Shard (1 Twilight Stone, 3 Twilight Shard)
 * Mythril Stone (1 Twilight Stone, 3 Twilight Shard)
 * Mythril Gem (1 Twilight Crystal, 3 Twilight Gem)
 * Mythril Crystal (1 Twilight Crystal, 3 Twilight Gem)
 * Moon Amulet (1 Twilight Stone, 1 Twilight Shard)
 * Star Charm (1 Twilight Stone, 1 Twilight Shard)
 * Save the King (3 Twilight Crystal, 5 Twilight Gem, 7 Twilight Stone, 9 Twilight Shard)
 * Save the King+ (3 Twilight Crystal, 5 Twilight Gem, 7 Twilight Stone, 9 Twilight Shard)
 * Ultima Weapon (1 Twilight Crystal)

Kingdom Hearts III

 * AP Boost (3 Twilight Shard)
 * Mythril Shard (1 Twilight Shard)
 * Mythril Stone (1 Twilight Stone)

Notes and references
Nébuleux Zwielicht (Material)