Skip to content
236,304 cards · 2464 sets0
Gem-Knight Master Diamond (Quarter Century Secret Rare) — Quarter Century Stampede Yu-Gi-Oh! card
Yu-Gi-Oh! · Quarter Century Secret RareLive pricing

Gem-Knight Master Diamond (Quarter Century Secret Rare)

Stable-1.4%
Quarter Century Stampede, 2025 · #RA04-EN178
Gem-Knight Master Diamond (Quarter Century Secret Rare)'s Near Mint price is down 8.2% ($0.31) over the past 30 days.
11h ago· Updated Nov 2, 2026
Card Details
TypeEffect — ROCK/FUSION
P/T2900/2500
Card TextMust first be Fusion Summoned. This card gains 100 ATK for each "Gem-" monster in your GY. Once per turn: You can banish 1 Level 7 or lower "Gem-Knight" Fusion Monster from your GY; until the End Phase, this card's name becomes that monster's, and replace this effect with that monster's original effects.
inkwell Fair Value™?· NM
$3.47
single source
—
—
Condition?
Confidencemedium
Prices as ofNov 2
Normal—
Cheapest printing—
Set Price Alert

Why This Price

inkwell Estimate
Fair Value$3.47
Movement
7D Change-1.4% (-$0.05)
30D Change-8.2% (-$0.31)
Freshness
Prices as ofNov 2
Update cadenceDaily
Inkwell Fair Value$3.47NM · compare before you buy
Buy this card

Affiliate link — inkwell may earn a commission. Learn more

More from Quarter Century Stampede

See all cards →
SPYRAL Resort (Quarter Century Secret Rare)
SPYRAL Resort (Quarter Century Secret Rare)
$5.20
Ice Hand (Quarter Century Secret Rare)
Ice Hand (Quarter Century Secret Rare)
$5.19
Mementotlan Angwitch (Quarter Century Secret Rare)
Mementotlan Angwitch (Quarter Century Secret Rare)
$5.14
Brilliant Fusion (Quarter Century Secret Rare)
Brilliant Fusion (Quarter Century Secret Rare)
$5.13
Link into the VRAINS! (Quarter Century Secret Rare)
Link into the VRAINS! (Quarter Century Secret Rare)
$5.09
How much is Gem-Knight Master Diamond (Quarter Century Secret Rare) worth?
The current Near Mint price for Gem-Knight Master Diamond (Quarter Century Secret Rare) from Quarter Century Stampede (Yu-Gi-Oh!) is $3.47. It has decreased 1.4% over the past 7 days.
What set is Gem-Knight Master Diamond (Quarter Century Secret Rare) from?
Gem-Knight Master Diamond (Quarter Century Secret Rare) is from the Quarter Century Stampede set, released April 2025. It is a Quarter Century Secret Rare in Yu-Gi-Oh!.
What rarity is Gem-Knight Master Diamond (Quarter Century Secret Rare)?
Gem-Knight Master Diamond (Quarter Century Secret Rare) is a Quarter Century Secret Rare card from Quarter Century Stampede in Yu-Gi-Oh!.
How has the price of Gem-Knight Master Diamond (Quarter Century Secret Rare) changed over the past 30 days?
Over the past 30 days, the Near Mint price of Gem-Knight Master Diamond (Quarter Century Secret Rare) has fallen 8.2% ($0.31) to $3.47.