Gem-Knight Master Diamond is a Fusion Monster of the Rock type with EARTH attribute in the Yu-Gi-Oh! trading card game. It has 2900 ATK and 2500 DEF. This card belongs to the Gem- archetype and is identified by card number RA04-EN178. It appears in the Quarter Century Stampede set (code RA04) with Quarter Century Secret Rare rarity and Holo finish.
2025 • Yu-Gi-Oh! • Quarter Century Stampede
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Gem-Knight Master Diamond is a Yu-Gi-Oh! trading card game card. It is a Fusion Monster of the Rock type with EARTH attribute. The card has a Level of 9 and stats of 2900 ATK / 2500 DEF. It is part of the Gem- archetype. The card is from the Quarter Century Stampede set, with set code RA04. It carries the rarity Quarter Century Secret Rare and has a Holo finish. The card number is RA04-EN178.
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The catalog profile below summarizes the card identity, featured subject, and notable collectible traits.
The core identity of the card within the set.
The subject, team, league, and sport context tied to this card.
Featured
Gem-Knight Master Diamond
Game
Yu-Gi-Oh!
Rarity, print treatment, and game-specific stats for this card.
Quarter Century Secret Rare
Card Stock
English
Holo
Earth
Rock
9
2900 / 2500
Gem-
Abilities, attacks, oracle text, and flavor text printed on the card.
3 "Gem-Knight" monsters Must first be Fusion Summoned. This card gains 100 ATK for each "Gem-" monster in your Graveyard. Once per turn: You can banish 1 Level 7 or lower "Gem-Knight" Fusion Monster from your Graveyard; until the End Phase, this card's name becomes that monster's, and replace this effect with that monster's original effects.
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