Gem-Knight Ruby
Gem-Knight Ruby is a Fusion Effect Monster in the Gem- archetype, first released in 2011 in Duel Terminal 5. It has 3 printings across 3 sets (Secret Rare, Duel Terminal Ultra Parallel Rare, Ultra Rare). The cheapest copy is BLMM-EN136 Ultra Rare at $0.26; the most valuable is DT05-EN034 Duel Terminal Ultra Parallel Rare at $13.57. In the TCG it is currently unlimited (3 copies).
Market price · TCGPlayer
Updated Oct 1, 2026
$0.26 – $13.57
3 printings priced
Type
Pyro
Level
6
ATK
2500
DEF
1300
Gem-Knight Garnet + 1 "Gem-Knight" monster // Must first be Fusion Summoned using the above cards as Fusion Material Monsters. Once per turn: You can Tribute 1 face-up "Gem" monster you control; this card gains ATK equal to the Tributed monster's ATK, until the End Phase. During battle between this attacking card and a Defense Position monster, inflict piercing Battle Damage to your opponent.
Appears in 3 expansions
Printings (3)
| expansion | Code | Rarity | Price | Buy |
|---|---|---|---|---|
| Hidden Arsenal 5: Steelswarm Invasion | HA05-EN019 | Secret Rare | $1.00 | |
| Duel Terminal 5 | DT05-EN034 | Duel Terminal Ultra Parallel Rare | $13.57 | |
| Battles of Legend: Monster Mayhem | BLMM-EN136 | Ultra Rare | $0.26 |
Gem-Knight Ruby: FAQ
How much is Gem-Knight Ruby worth?+
Gem-Knight Ruby currently sells for $0.26 – $13.57 on TCGPlayer, from $0.26 for BLMM-EN136 up to $13.57 for DT05-EN034. The exact value depends on the printing, rarity, edition and condition — scan the card with YuScan to see the price of your copy.
Which sets was Gem-Knight Ruby printed in?+
Gem-Knight Ruby appears in 3 sets: Hidden Arsenal 5: Steelswarm Invasion, Duel Terminal 5, Battles of Legend: Monster Mayhem.
Is Gem-Knight Ruby legal in tournaments?+
On the current TCG Forbidden & Limited List, Gem-Knight Ruby is unlimited (3 copies).
What is the passcode of Gem-Knight Ruby?+
The 8-digit passcode printed on Gem-Knight Ruby is 76614340.
Gem-
Cards →
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