List of metamorphic gems:

Heavy gems: Leech of Fran Castle, Giant Magician of Fran Castle, Poison Mist Savage

Sharp gem Casas Cemetery The Great Curved Sword Skeleton

The Red-Eyed Knight in front of the gate of Lothric High Wall with skilled gems, the Lothric Knight in the Great Library

The Dead of Rough Gem Lothric High Wall, Rose The Soldiers of the Dead in Riker City

The Candle Ends in the Crystal Gem Library

The Iron Soldiers in the Dungeon of the Fool's Gem

The Lamp-Holding Dead in the Fire Gem Undead Street

The Spell Rats and Spell Demons of the Chaos Gem Smoked Lake

The Snakeheads at the Top of the Ancient Dragon of the Thunder Gem

The Feathered Knights of the Blessed Gem Library, everywhere The fat female missionary

The snake sword villain in the Abyss Gem Abyss Temple

The mutated dead man on the right side of the dark gem Rosric's high wall

The blood gem enters The undead soldiers and magicians in front of Anorond, the transparent enemies in Cold Valley

The poisonous gems, the leeches and wildlings in Fran Castle

The gems of the dead are temporarily unknown

Transformed bastards who have lost the way of living stone sacrifices, crows of the dead in the Farland Abyss

Keystone fragments are generally found in the bastards of the dead

Large keystone fragments on the roof of the large library The Golden Angel, the Knight of Rosric City

The Golden Angel on the roof of the Keystone Block Library, the knight of Roslik City, and the huge snake-headed soldiers on the top of the ancient dragon

Keystone Plains The disk seems to be useless

The rock lizard on the top of the luminous keystone ancient dragon?