- tcgrate
- Games
- Yu-Gi-Oh!
- Sets
- Hidden Arsenal 5: Steelswarm Invasion
- Gem-Knight Aquamarine
Yu-Gi-Oh! · Hidden Arsenal 5: Steelswarm Invasion · #HA05-EN020 · Secret Rare
Gem-Knight Aquamarine
Yu-Gi-Oh! card price for Gem-Knight Aquamarine: $1.33 market, from $0.49 at the cheapest listing, 1st Edition printing, updated Oct 20, 2026. Full price history since Feb 8, 2024 below.
Sellers right now
Market price is what a near-mint copy actually sold for. The cheapest listing is what a seller asks today — on thin markets the two differ a lot.
Where to buy
One year
Price story
We have tracked Gem-Knight Aquamarine (1st Edition) since February 2024, when it sold for $0.40. Today the market price is $1.33, up 233%. Across the past year it went +3.1%, with a low of $1.29 and a high of $1.67; today it sits near the bottom of that range. The highest price we have recorded is $1.67, 25.6% above today. Listings currently start at $0.49; over the last 30 days the market price averaged $1.43.
Printings
The card in play
- Card type
- Fusion/Effect Monster
- Attribute
- EARTH
- Monster type
- Aqua
Gem-Knight Sapphire + 1 "Gem-Knight" monster // Must first be Fusion Summoned (from the Extra Deck) using the above Fusion Material Monsters. If this card attacks: Change it to Defense Position at the end of the Battle Phase. When this card is sent from the field to the Graveyard: Target 1 card your opponent controls; return it to the hand.
