Gem-Knight Lady Brilliant Diamond (BLMM-EN145) from Battles of Legend: Monster Mayhem (YUGIOH) is available from 2 stores across 2 regions. Cheapest at $0.16 from cardtrader (EU) — 27% cheaper than US. Prices last updated Jun 13, 2026.
yugioh
Gem-Knight Lady Brilliant Diamond
Battles of Legend: Monster Mayhem
- Collector #
- BLMM-EN145
- Rarity
- Secret Rare
- Set
- BLMM
3 platforms1 condition
7d Change
No data
Lowest Price
$0.16
CardTradersave $0.06
Stores
2
CardTrader, TCGPlayer
Price Range
$0.16 – $0.22
Prices
Not enough data for Buy Signal (needs 7+ days of price history).
Price History
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Profit Calculator
Buy Total (USD)
$14.80
Seller Fees
-$0.32
Net Profit
$-14.90
ROI
-100.7%
Break-even sell price: $16.82 on tcgplayer
