Individual Cards · Battles of Legend: Monster Mayhem
Gem-Knight Aquamarine (BLMM-EN137) Ultra Rare 1st Edition
Ultra Rare
Gem-Knight Aquamarine is an Ultra Rare 1st Edition card from the Battles of Legend: Monster Mayhem set (BLMM-EN137). This water-attribute monster is essential for Gem-Knight strategies, offering both utility and collectibility. The card is available in near mint condition, perfect for players and collectors alike.✦ AI summary
Gem-Knight AquamarineBLMM-EN137Battles of Legend Monster MayhemUltra RareYu-Gi-Oh
How much is Gem-Knight Aquamarine (BLMM-EN137) Ultra Rare 1st Edition worth?
As of Aug 15, 2026, the market median price of Gem-Knight Aquamarine (BLMM-EN137) Ultra Rare 1st Edition is $1.92 on eBay. Across 3 price snapshots tracked by TCGKami, the average is $1.90, ranging from a low of $1.89 (Aug 8, 2026) to a high of $1.92 (Aug 15, 2026), a +1.5% change over the tracking period.
Market median$1.92
Average (tracked)$1.90
Low$1.89Aug 8, 2026
High$1.92Aug 15, 2026
Trend+1.5%
Snapshots3
Data updated Aug 15, 2026 · source: live eBay listings, aggregated by TCGKami
Live Listings
No listings found.
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