Twilight

Twilight is a material type available in Kingdom Hearts II and Kingdom Hearts III. Twilight materials contain the essence of twilight, and are colored white.

In Kingdom Hearts II, 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 (12%), Olympus, Twilight Town, Kingdom of Corona
 * Twilight Stone: Dusk (6%), Gambler (18%), Kingdom of Corona, Arendelle, The Caribbean
 * Twilight Gem: Gambler (12%), Arendelle, The Caribbean
 * Twilight Crystal: Gambler (6%), Sorcerer (80%), The Caribbean

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
Twilight materials are used to synthesize the following items:
 * Defense Boost (2 Twilight Crystal)
 * AP Boost (3 Twilight Shard)
 * Nobody Guard (2 Twilight Gem)
 * Nobody Guard+ (2 Twilight Gem)
 * Buster Band (2 Twilight Gem)
 * Buster Band+ (2 Twilight Gem)
 * Mythril Shard (1 Twilight Shard)
 * Mythril Stone (1 Twilight Stone)
 * Mythril Gem (1 Twilight Gem)
 * Mythril Crystal (1 Twilight Crystal)

Notes and references
Nébuleux Zwielicht (Material)