Dialga's most valuable card is a 2014 Phantom Forces Secret Rare priced at $971.26 raw, roughly 1.9 times the next card in a top ten that spans six TCG eras and five different card mechanics.
Dialga EX, the Secret Rare from 2014's XY: Phantom Forces, is Dialga's most valuable card. Cardboard Alpha's live market data prices a raw, Near Mint copy at $971.26 as of September 27, 2026, roughly 1.9 times the next card on this list.
The full top ten spans six Pokemon TCG eras and five different card mechanics. Behind the leader sit an Ultra Rare GX alternate full art, a Black & White-era Dialga-EX full art, a Call of Legends shiny holo, three Level-Up (LV.X) prints including a holo promo, both halves of a LEGEND pair, and a 2023 VSTAR secret rare.
Cardboard Alpha market price $971.26 (raw, Near Mint) as of September 27, 2026, the highest of any Dialga card.
Dialga's ten most valuable cards
Every price below is Cardboard Alpha's own evaluated market price for a raw, ungraded, Near Mint copy, read September 27, 2026. None of these are graded prices, and none include shipping.
A same-day cross-check against TCGplayer's own published market price matched five of these ten figures to the cent. Four more (Dialga EX, the Arceus & Dialga & Palkia GX, the LEGEND bottom half and the VSTAR) sit within 8% of TCGplayer's figure. The outlier is Dialga G LV.X: TCGplayer's market price of $231.28 is well above Cardboard Alpha's $150.00, and on TCGplayer's number alone it would rank sixth rather than eighth.
The ranking covers standard-size cards only. An oversized jumbo Palkia & Dialga LEGEND promo, priced at $299.99 on the same read, is left out because TCGplayer lists it as a single oversized promo in its Jumbo Cards category, not a standard-size card.
Dialga's top 6 cards by raw market price
Dialga EX (2014)971.26USD
Arceus/Dialga/Palkia GX (2019)521.42USD
Dialga-EX (2013)393.66USD
Dialga, Call of Legends (2011)362.99USD
Dialga LV.X (2008)249.99USD
Dialga LV.X promo DP17168.43USD
Cardboard Alpha market price, raw/Near Mint, read September 27, 2026.
Why the Phantom Forces Secret Rare leads
Dialga EX 122/119 is a Secret Rare, meaning its card number runs past Phantom Forces' official 119-card count, the defining trait of a Secret Rare per Wikipedia's Pokemon Trading Card Game entry. It is built on the Pokemon-EX mechanic, which that same entry dates to Next Destinies.
At $971.26, it trades for roughly 1.9 times the next card on this list. That is the widest gap between any two adjacent cards in the top ten, and no other Dialga print, in any era or mechanic, comes close to matching it.
Dialga's species background
Dialga is a Steel and Dragon Legendary Pokemon introduced in Generation IV, the 2006 games Pokemon Diamond and Pearl, per the Dialga entry in Wikipedia's list of generation IV Pokemon. It is one of three Pokemon of Myth created by Arceus, alongside Palkia and Giratina, with complete control over time.
Three of the ten cards above pair Dialga with Palkia, its partner in that trio: the Arceus & Dialga & Palkia GX and both halves of the Palkia & Dialga LEGEND.
Starting with Pokemon Legends: Arceus, Dialga can assume an Origin Forme using the Adamant Crystal, per the same Wikipedia entry. Origin Forme Dialga VSTAR, tenth on this list at $124.26, is the only card here built around that newer form.
The mechanics behind the top ten
Five different card mechanics, some with overlapping names, appear in the top ten. Keeping them apart matters when comparing prices across this list.
LV.X (Great Encounters and a DP promo): Pokemon LV.X (Level Up) debuted in the Diamond & Pearl series and lets a card use the attacks, Poke-Powers and Poke-Bodies of its previous evolution, per Wikipedia's Pokemon Trading Card Game entry. Dialga LV.X appears twice here: a $249.99 Great Encounters print and a $168.43 holo promo numbered DP17.
G LV.X (2009, Platinum): Dialga G LV.X, at $150.00, is a separate LV.X card from the Platinum set.
Pokemon-EX (2014 and 2013): Dialga EX (Phantom Forces, $971.26) and Dialga-EX (Plasma Blast, $393.66) both use the Pokemon-EX mechanic that Wikipedia dates to Next Destinies.
GX (2019, Cosmic Eclipse): Arceus & Dialga & Palkia GX, at $521.42, uses the GX mechanic Wikipedia dates to the Sun & Moon series, worth 2 Prizes when knocked out.
LEGEND (2010, Triumphant): Palkia & Dialga LEGEND is built from two physical cards that both have to be played onto the Bench at once, per Wikipedia, a mechanic introduced in the HeartGold & SoulSilver series.
VSTAR (2023, Crown Zenith Galarian Gallery): Origin Forme Dialga VSTAR, at $124.26, uses the newest mechanic on this list, introduced in Brilliant Stars and evolving from a Pokemon V.
One naming note: the DP17 promo is a Dialga LV.X, not a plain Dialga. TCGplayer's own product listing names it Dialga LV.X, and that is the identity used above.
The Palkia & Dialga LEGEND pair
Palkia & Dialga LEGEND is not a single card. A LEGEND Pokemon needs both physical halves played to the Bench together to function, and each half carries its own market price.
Bottom half, 102/102: $154.99, the higher-priced half.
Top half, 101/102: $136.49.
A collector completing the pair needs both listed cards. On the September 27, 2026 read, the two halves together price at $291.48, not the higher single number. The 30th Celebration Classic Collection reprints a different LEGEND pair, Darkrai & Cresselia, covered in 30th Celebration's linked artwork.
The low end of the Dialga range
Dialga's catalog runs far beyond its top ten. Cardboard Alpha's production database carries 51 English Dialga printings in total, and every one of them has a live evaluated price.
The cheapest is a plain Dialga Rare from 2024's Surging Sparks, numbered 135. It evaluates at $0.16 raw and Near Mint as of September 27, 2026, more than 6,000 times cheaper than Dialga EX at the top of this list.
That spread, from a $0.16 modern rare to a $971.26 Secret Rare, is the real shape of a 51-card catalog built around one Pokemon. Most of the value sits in a handful of chase prints, while 13 of the 51 printings price under $5 even in their most expensive finish.
What this guide does not price
Every figure above is Cardboard Alpha's own evaluated market price, read directly from its production pricing engine on September 27, 2026. A same-day check against TCGplayer's own published market price matched five of the ten figures to the cent.
PSA population data is absent. No PSA 10 count or gem rate could be verified against PSA's own published report while this guide was prepared: psacard.com returned an access error on every attempt, and the only Dialga pop figures found elsewhere came from third-party aggregator sites relaying PSA's numbers rather than PSA's own page, so none of that appears here.
No auction-house realized sale, from Heritage, PWCC or any other house, appears either. Graded prices are absent entirely. Every number above is raw and ungraded, and a raw price is not a stand-in for what a graded copy of the same card sells for.
Prices also move. This is a single dated read, not a trend line, and any figure in it, or the order of cards separated by a few dollars, can change on the next read. Collectors can browse the rest of the price-guides catalog, check Gem Mint 10 odds by set before assuming a raw price translates to a graded one, or screen the covered universe for how Dialga's cards move against the wider catalog.
Frequently asked questions
What is the most valuable Dialga card?
Dialga EX, the Secret Rare from 2014's XY: Phantom Forces, is the most valuable Dialga card. Cardboard Alpha's live market data priced a raw, Near Mint copy at $971.26 as of September 27, 2026, roughly 1.9 times the second-place card.
Why are there two Dialga EX cards in the top three?
Dialga EX (Phantom Forces, 2014, card 122) and Dialga-EX (Plasma Blast, 2013, card 99) are separate printings on the same Pokemon-EX mechanic, which Wikipedia's Pokemon Trading Card Game entry dates to Next Destinies. Cardboard Alpha prices them at $971.26 and $393.66 respectively, raw and Near Mint, as of September 27, 2026. Each set also has a lower-numbered Dialga EX that prices far lower.
Do I need both halves of the Palkia & Dialga LEGEND card?
Yes. A LEGEND Pokemon, per Wikipedia, is built from two separate physical cards that both have to be played onto the Bench together to function as one Pokemon. The pair's two halves price separately at $154.99 and $136.49 as of September 27, 2026, and completing the LEGEND means buying both.
How many Dialga cards are there?
Cardboard Alpha's production catalog carries 51 English Dialga printings, from a $971.26 Secret Rare down to a $0.16 modern rare from 2024's Surging Sparks, as of September 27, 2026. All 51 have a live evaluated raw, Near Mint price on file.
Why doesn't this guide show PSA 10 prices or population counts?
No PSA population figure or graded price for these cards could be verified against PSA's own published report while this guide was prepared. Rather than estimate a graded number from a third-party aggregator, this guide omits graded pricing entirely and prices every card raw and ungraded.
Jackie Chung covers the Pokémon TCG secondary market for Cardboard Alpha, with a focus on grading economics and set value guides. She spends most of her research time in population reports and grade-spread data, tracing how submission volume, print runs, and grading-company standards shape the premium between a raw card and its graded counterparts across different eras. Her set guides are built the same way: grounded in published pricing and pop data first, with market narrative kept separate from the numbers behind it.
Jackie Chung's articles describe market history and mechanics using published population and pricing data. They are informational and are not personalized investment advice.
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