Simulated holo effect, for illustration only.
Hidden Arsenal 5: Steelswarm Invasion
Gem-Knight Aquamarine
- Expansion
- Hidden Arsenal 5: Steelswarm Invasion
- Code
- HA05-EN020
- Rarity
- Secret Rare
- Card type
- Monster · Aqua/Fusion/Effect
- Attribute
- EARTH
- Level
- 6
- ATK / DEF
- 1400 / 2600
- Archetype
- Gem-
Card text
"Gem-Knight Sapphire" + 1 "Gem-Knight" monster Must first be Fusion Summoned with the above Fusion Material Monsters. If this card attacks, it is changed 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 that target to the hand.
Other printings
Price history
Ungraded cards
Condition: Near Mint (Mint and Near Mint)
- From
- —
- Price trend
- €2.46
- Average price 30 days
- €1.80
- Average price 7 days
- €2.14
- Average price 1 day
- €1.00
Oct 2, 2026 · €2.46
The dashed line is an estimate from the markets' rolling averages; recorded history starts on Oct 1, 2026.
Show data as a table
| Date | Price | Low |
|---|---|---|
| Oct 2, 2026 | €2.46 | — |
| Oct 1, 2026 | €2.46 | — |
| Sep 25, 2026 (estimate) | €2.14 | — |
| Sep 24, 2026 (estimate) | €2.14 | — |
| Sep 2, 2026 (estimate) | €1.80 | — |
| Sep 1, 2026 (estimate) | €1.80 | — |
Graded index
Certified cards, by grader and grade — kept apart from ungraded prices.
No graded prices
There aren't enough reliable offers for this graded card on external markets.