Gem-Knight Aquamarine

Battles of Legend: Monster Mayhem (2025), Yu-Gi-Oh!, BLMM-EN137, Ultra Rare


Gem-Knight Aquamarine

Printing: 1st Edition · Near Mint

$0.21

TCGplayer market price (an average of recent sales)

As of Oct 19 (yesterday). Unchanged since Oct 16.

Listed median$0.25asks on TCGplayer as of Oct 19 (1.2× the market price)

Change

7d0.0%30d+16.7% +$0.0390d+5.0% +$0.011y+90.9% +$0.10

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Related cards

Price trend

Oct 11 $0.21 → Oct 18, 2026 $0.21 0.0%

$0.24$0.22$0.23$0.21
Oct 11, 2026Oct 13, 2026Oct 14, 2026Oct 15, 2026Oct 18, 2026

Sep 18 $0.18 → Oct 18, 2026 $0.21 +16.7%

$0.24$0.17$0.18$0.20$0.22$0.21
Sep 18, 2026Sep 28, 2026Oct 3, 2026Oct 8, 2026Oct 18, 2026

Jul 20 $0.20 → Oct 18, 2026 $0.21 +5.0%

$0.28$0.16$0.20$0.25$0.21
Jul 20, 2026Aug 19, 2026Sep 3, 2026Sep 18, 2026Oct 18, 2026

Oct 18, 2025 $0.11 → Oct 18, 2026 $0.21 +90.9%

$0.28$0.07$0.10$0.15$0.20$0.21
Oct 18, 2025Feb 16, 2026Apr 18, 2026Jun 18, 2026Oct 18, 2026

Jun 12, 2025 $0.19 → Oct 18, 2026 $0.21 +10.5%

$0.28$0.07$0.10$0.15$0.20$0.21
Jun 12, 2025Nov 23, 2025Feb 13, 2026May 6, 2026Oct 18, 2026

Record

Price history Jun 12, 2025 to Oct 18, 2026

Highest$0.28Aug 8, 2026
Lowest$0.07Jan 31, 2026
Vs highest25% below $0.28

Price changes, last 30 days

DatePriceChange
Oct 1$0.20 → $0.21+5.0%Show on chart
Oct 5$0.21 → $0.22+4.8%Show on chart
Oct 7$0.22 → $0.21−4.5%Show on chart
Oct 12$0.21 → $0.23+9.5%Show on chart
Oct 14$0.23 → $0.24+4.3%Show on chart
Oct 16$0.24 → $0.21−12.5%Show on chart

Latest 6 of 11.

Vs its set

Over the 90 days to Oct 18, 2026: this card +5.0%; the median other printing in Battles of Legend: Monster Mayhem −4.3% (201 other printings).

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Live market

Newest TCGplayer value: Oct 19, 2026. Prices in USD. Card names and images © their respective publishers. See how these prices are made.