Gem-Knight Master Diamond
Quarter Century Stampede · #EN178

Gem-Knight Master Diamond

Gem-Knight Master Diamond is a Quarter Century Secret Rare Fusion Monster from Quarter Century Stampede (EN178) in the Yu-Gi-Oh! TCG. Stats: EARTH, Level 9, ATK 2900, DEF 2500. Archetype: Gem-. Cactaur's latest catalog snapshot shows a market reference near $3.62 for ungraded copies.

Quarter Century Stampede set collectorsHigh-end singles buyersFinish-sensitive collectors [object Object]
TCGPlayer market $3.62
Cardmarket trend
Rarity Quarter Century Secret Rare
App coming soon

Who is this card for?

Gem-Knight Master Diamond suits collectors and players working on Quarter Century Stampede who need the Quarter Century Secret Rare slot. Treat $3.62 as a starting reference only — verify edition, rarity, and condition before paying premium singles prices.

What is Gem-Knight Master Diamond from Quarter Century Stampede?

Gem-Knight Master Diamond is a Fusion Monster in Quarter Century Stampede numbered EN178. EARTH, Level 9, ATK 2900, DEF 2500. Archetype: Gem-. Gem-Knight Master Diamond (EN178) is a chase-tier Quarter Century Secret Rare Fusion Monster in Quarter Century Stampede. Edition, rarity code, and grade drive most of the premium beyond raw near-mint quotes.

What is Gem-Knight Master Diamond worth today?

Cactaur tracks a market reference near $3.62 for Gem-Knight Master Diamond. Low and high spread runs $3.62 to null. This printing is from Quarter Century Stampede. Collector number EN178 distinguishes this printing from same-name cards in other sets. Catalogued rarity: Quarter Century Secret Rare.

SetQuarter Century Stampede
NumberEN178
RarityQuarter Century Secret Rare
TCGPlayer USD$3.62
Cardmarket EUR

How collectible is Gem-Knight Master Diamond?

Gem-Knight Master Diamond is a Quarter Century Secret Rare printing in Quarter Century Stampede. Chase-tier slots combine scarcity, art, and format demand — prices move with reprint news and tournament results. This printing is from Quarter Century Stampede. Collector number EN178 distinguishes this printing from same-name cards in other sets.

What are the key details for Gem-Knight Master Diamond?

Gem-Knight Master Diamond lists as Fusion Monster (Rock). Rules text is indexed in the catalog for search and deck research. TCG banlist: Limited. This printing is from Quarter Century Stampede. Collector number EN178 distinguishes this printing from same-name cards in other sets.

Cactaur's take

Gem-Knight Master Diamond (EN178) is a chase-tier Quarter Century Secret Rare Fusion Monster in Quarter Century Stampede. Edition, rarity code, and grade drive most of the premium beyond raw near-mint quotes.

Pros

  • Gem-Knight Master Diamond is catalogued as Quarter Century Secret Rare Fusion Monster in Quarter Century Stampede, making set code and passcode verification straightforward.
  • Public market data shows a reference near $3.62.
  • EARTH, Level 9, ATK 2900, DEF 2500 helps deck builders confirm the correct printing quickly.

Cons

  • Raw market prices vary by condition and edition — near-mint estimates are not slab grades.

Verdict: Use $3.62 as a benchmark, then adjust for edition, grade, and how quickly you need to buy or sell.

FAQ

What is Gem-Knight Master Diamond from Quarter Century Stampede?

Gem-Knight Master Diamond is a Quarter Century Secret Rare Fusion Monster from Quarter Century Stampede numbered EN178 in the Yu-Gi-Oh! TCG. Cactaur indexes set, rarity, stats, and market references for this printing.

How much is Gem-Knight Master Diamond worth?

Cactaur's catalog snapshot shows a market reference near $3.62 for ungraded Gem-Knight Master Diamond. Condition, edition, and recent sold comps can move realized prices above or below that benchmark.

What rarity is Gem-Knight Master Diamond?

Gem-Knight Master Diamond is catalogued as Quarter Century Secret Rare in Quarter Century Stampede. Use the set code on listings to confirm you are buying this exact printing.

Is Gem-Knight Master Diamond on the TCG banlist?

Gem-Knight Master Diamond shows TCG banlist status Limited based on our latest ingest. Always verify ban-list updates before registering a deck for an event. This printing is from Quarter Century Stampede.

Why does Gem-Knight Master Diamond trade at a premium?

Gem-Knight Master Diamond combines Quarter Century Secret Rare scarcity with art, edition, and format demand. Chase slots often move on reprint rumors, tournament results, and condition-sensitive buyer interest.

Related cards

Trust & data sources. Cactaur displays catalog and market data from pokemontcg.io embedded TCGPlayer/Cardmarket references. Prices change frequently and are not guarantees.

Cactaur does not authenticate cards or guarantee values. Scan your copy in the iPhone app for condition-aware guidance.

Catalog snapshot: 2026-06-25. Last updated: 2026-06-25.