The Gem-Knight Alexandrite (HA05-EN004) from the 2011 Hidden Arsenal 5: Steelswarm Invasion set, featuring a sought-after Secret Rare holo finish for TCG enthusiasts.
2011 • Yu-Gi-Oh! • Hidden Arsenal 5: Steelswarm Invasion
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| Condition | Value | Source | Trend | Price Details |
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$0.55 | Guide Estimate | |||
$0.59 | Guide Estimate | |||
$5.89 | Guide Estimate | |||
$6.00 | Guide Estimate | |||
$7.00 | Guide Estimate | |||
$49.00 | Guide Estimate | |||
$15.00 | Guide Estimate | |||
$37.35 | Guide Estimate | |||
$22.00 | Guide Estimate | |||
Raw / Ungraded
PriceCharting Price Guide · Guide Estimate evidence · captured Oct 22, 2026
History is building. At least two days of matching observations are needed to show a trend.
Each point is the last stored observation that day for this printing, condition, grader, autograph status and source. Gaps mean no observation; guide estimates and asking prices are not completed sales.Gem-Knight Alexandrite (HA05-EN004) is a notable Effect Monster from the Yu-Gi-Oh! Hidden Arsenal 5: Steelswarm Invasion set, released in 2011. As a Level 4 EARTH Rock monster belonging to the Gem-Knight archetype, this card occupies a specific niche within the Trading Card Game's extensive history. The release of Hidden Arsenal 5: Steelswarm Invasion provided collectors with a unique blend of strategic gameplay and premium collectibility, focusing on the Gem-Knight series that has remained popular among fans for years. This card is classified as a Secret Rare, distinguished by its premium holo finish which enhances its visual appeal for display and collection purposes. In the Yu-Gi-Oh! TCG, Secret Rares are highly valued not only for their aesthetic quality but also for their status as sought-after variants within their respective sets. Collectors often seek out HA05-EN004 to complete their Hidden Arsenal 5 collections or to add a high-rarity Gem-Knight to their library. For players, Gem-Knight Alexandrite represents a classic piece of Yu-Gi-Oh! Strategy, embodying the tactical depth that defines the game. Whether you are a long-time collector focusing on set completion or a new enthusiast exploring the Gem-Knight archetype, this card offers a tangible connection to the 2011 era of Yu-Gi-Oh! Trading cards. The combination of its specific card number, set origin, and premium rarity makes it a distinct addition to any curated inventory.
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The catalog profile below summarizes the card identity, featured subject, and notable collectible traits.
The core identity of the card within the set.
The subject, team, league, and sport context tied to this card.
Featured
Gem-Knight Alexandrite
Game
Yu-Gi-Oh!
Rarity, print treatment, and game-specific stats for this card.
Secret Rare
Card Stock
English
Holo
Earth
Rock
4
1800 / 1200
Gem-
Abilities, attacks, oracle text, and flavor text printed on the card.
You can Tribute this card; Special Summon 1 "Gem-Knight" Normal Monster from your Deck.
FAQ
Gem-Knight Alexandrite (HA05-EN004) originates from the Hidden Arsenal 5: Steelswarm Invasion set, which was released in 2011. This set is part of the ongoing Hidden Arsenal series of Yu-Gi-Oh! trading cards.
HA05-EN004 is a Secret Rare card, characterized by its distinctive holo finish. Secret Rares are premium variants within Yu-Gi-Oh! sets, often sought after for their collectibility and visual appeal.
Gem-Knight Alexandrite is part of the Gem-Knight archetype, a popular series of EARTH Attribute Rock monsters in the Yu-Gi-Oh! Trading Card Game. It is a Level 4 Effect Monster designed to support strategies focused on this family of cards.
Explore cards with this name across sets and editions. Check each card’s details before choosing a version.
