Some Pokémon evolve by Levelling up, some at specific levels, some if they're happy. Others however evolve when they are holding or subjected to a special item. These items are all dotted around the various regions and are necessary in order to evolve specific Pokémon. These items are all 1 use per item.

Picture	Name	Effect
	Dawn Stone	A peculiar stone that can make certain species of Pokémon evolve. It sparkles like a glittering eye.
	Deep Sea Scale	An item to be held by Clamperl. This scale shines with a faint pink and raises the holder’s Sp. Def stat.
	Deep Sea Tooth	An item to be held by Clamperl. This fang gleams a sharp silver and raises the holder’s Sp. Atk stat.
	Dragon Scale	A very tough and inflexible scale. Dragon-type Pokémon may be holding this item when caught.
	Dubious Disc	A transparent device overflowing with dubious data. Its producer is unknown.
	Dusk Stone	A peculiar stone that can make certain species of Pokémon evolve. It holds shadows as dark as can be.
	Electirizer	A box packed with a tremendous amount of electric energy. It’s loved by a certain Pokémon.
	Fire Stone	A peculiar stone that can make certain species of Pokémon evolve. The stone has a fiery orange heart.
	Ice Stone	A peculiar stone that can make certain species of Pokémon evolve. It has an unmistakable snowflake pattern.
	King's Rock	An item to be held by a Pokémon. When the holder successfully inflicts damage, the target may also flinch.
	Leaf Stone	A peculiar stone that can make certain species of Pokémon evolve. It has an unmistakable leaf pattern.
	Magmarizer	A box packed with a tremendous amount of magma energy. It’s loved by a certain Pokémon.
	Metal Coat	An item to be held by a Pokémon. It’s a special metallic film that can boost the power of Steel-type moves.
	Moon Stone	A peculiar stone that can make certain species of Pokémon evolve. It is as black as the night sky.
	Oval Stone	A peculiar stone that can make certain species of Pokémon evolve. It’s as round as a Pokémon Egg.
	Prism Scale	A mysterious scale that causes a certain Pokémon to evolve. It shines in rainbow colors.
	Protector	A protective item of some sort. It is extremely stiff and heavy. It’s loved by a certain Pokémon.
	Razor Claw	An item to be held by a Pokémon. This sharply hooked claw increases the holder’s critical-hit ratio.
	Razor Fang	An item to be held by a Pokémon. When the holder successfully inflicts damage, the target may also flinch.
	Reaper Cloth	A cloth imbued with horrifyingly strong spiritual energy. It’s loved by a certain Pokémon.
	Sachet	A sachet filled with fragrant perfumes that are just slightly too overwhelming. Yet it’s loved by a certain Pokémon.
	Shiny Stone	A peculiar stone that can make certain species of Pokémon evolve. It shines with a dazzling light.
	Sun Stone	A peculiar stone that can make certain species of Pokémon evolve. It burns as red as the evening sun.
	Thunderstone	A peculiar stone that can make certain species of Pokémon evolve. It has a distinct thunderbolt pattern.
	Up-Grade	A transparent device somehow filled with all sorts of data. It was produced by Silph Co.
	Water Stone	A peculiar stone that can make certain species of Pokémon evolve. It is the blue of a pool of clear water.
	Whipped Dream	A soft and sweet treat made of fluffy, puffy, whipped, and whirled cream. It’s loved by a certain Pokémon.