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Gem-Knight Master Diamond — Hidden Arsenal 7: Knight of Stars Yu-Gi-Oh! card
Yu-Gi-Oh! · Secret RareLive pricing

Gem-Knight Master Diamond

Stable0.0%
Hidden Arsenal 7: Knight of Stars, 2013 · #HA07-EN059
Gem-Knight Master Diamond's Near Mint price is up 3.4% ($0.04) over the past 30 days.
Fresh· Updated Nov 3, 2026
Card Details
TypeMonster — Rock/Fusion/Effect
Mana Cost7
P/T2900/2500
ArtistKAZUKI TAKAHASHI
RaceRock
ArchetypeGem-
AttributeEARTH
Frame Typefusion
Human Readable TypeFusion Effect Monster
Card TextMust first be Fusion Summoned. This card gains 100 ATK for each "Gem-Knight" monster in your Graveyard. Once per turn: You can banish 1 "Gem-Knight" Fusion Monster from your Graveyard, until the End Phase, this card's name and original effect become the same as that banished monster's.
inkwell Fair Value™?· NM
$1.22
single source
—
—
Condition?
Confidencemedium
Prices as ofNov 3
Normal—
Cheapest printing$0.19
Set Price Alert

Why This Price

inkwell Estimate
Fair Value$1.22
Movement
7D Change+0.0% (+$0.00)
30D Change+3.4% (+$0.04)
Freshness
Prices as ofNov 3
Update cadenceDaily
Inkwell Fair Value$1.22NM · compare before you buy
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4 Printings
How much is Gem-Knight Master Diamond worth?
The current Near Mint price for Gem-Knight Master Diamond from Hidden Arsenal 7: Knight of Stars (Yu-Gi-Oh!) is $1.22. The price has been stable over the past 7 days.
What set is Gem-Knight Master Diamond from?
Gem-Knight Master Diamond is from the Hidden Arsenal 7: Knight of Stars set, released April 2013. It is a Secret Rare in Yu-Gi-Oh!.
What rarity is Gem-Knight Master Diamond?
Gem-Knight Master Diamond is a Secret Rare card from Hidden Arsenal 7: Knight of Stars in Yu-Gi-Oh!.
How has the price of Gem-Knight Master Diamond changed over the past 30 days?
Over the past 30 days, the Near Mint price of Gem-Knight Master Diamond has risen 3.4% ($0.04) to $1.22.
How many printings of Gem-Knight Master Diamond exist?
Gem-Knight Master Diamond has 4 printings across different Yu-Gi-Oh! sets. The cheapest printing is $0.19 from Star Pack ARC-V.