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Gem-Knight Master Diamond
EARTH · Rock / Fusion Effect Monster · Level 9 · ATK 2900 / DEF 2500
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.
Is it legal?
TCGLimited
OCGUnlimited (3)
Master DuelUnlimited (3)
Rarity: Ultra Rare (UR)
Genesys66 points
Price
About $0.12–$0.16 across printings and stores (as of Oct 9, 2026). See listings on TCGplayer · eBay · Cardmarket (EU)
Price history & alerts
Printings
| Set | Code | Rarity |
|---|---|---|
| Battles of Legend: Monster Mayhem | BLMM-EN143 | Ultra Rare |
| Duel Terminal 7b | DT07-EN083 | Duel Terminal Ultra Parallel Rare |
| Hidden Arsenal 7: Knight of Stars | HA07-EN059 | Secret Rare |
| Quarter Century Stampede | RA04-EN178 | Platinum Secret Rare |
| Quarter Century Stampede | RA04-EN178 | Quarter Century Secret Rare |
| Star Pack ARC-V | SP15-EN030 | Common |
| Star Pack ARC-V | SP15-EN030 | Shatterfoil Rare |
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