Gem-Knight Aquamarine

Fusion Effect Monster

Gem-Knight Aquamarine is a Fusion Effect Monster (EARTH/Aqua, Level 6) with 1400 ATK / 2600 DEF. First printed in Duel Terminal 5a (2011).

Type: Fusion Monster
Attribute: EARTH
Monster type: Aqua
Level: 6
ATK / DEF: 1400 / 2600
Archetype: Gem-
Banlist: Unlimited in the TCG, OCG, and Master Duel
TCG release: 2011-05-29
Printings: 3

Card text

"Gem-Knight Sapphire" + 1 "Gem-Knight" monster Must first be Fusion Summoned with the above Fusion Materials. If this card attacks, it is changed to Defense Position at the end of the Battle Phase. If this card is sent from the field to the GY: Target 1 card your opponent controls; return that target to the hand.

Approximate value

≈$0.17

A rough figure from recent listings (updated 2026-06-09), not a market value or official price. It varies a lot with printing, condition, edition, rarity, and grading. Check current listings below before buying or selling.

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Printings & rarities

All printings →

Set	Set code	Rarity	Release	Price*
Duel Terminal 5a	DT05-EN035	Duel Terminal Super Parallel Rare	2011-05-29	$0.17
Hidden Arsenal 5: Steelswarm Invasion	HA05-EN020	Secret Rare	2011-12-01	$0.17
Battles of Legend: Monster Mayhem	BLMM-EN137	Ultra Rare	2025-08-28	$0.17

*Approximate, from recent marketplace listings, not market values.