- tcgrate
- Games
- Yu-Gi-Oh!
- Sets
- Battles of Legend: Monster Mayhem
- Gem-Knight Lady Brilliant Diamond
Yu-Gi-Oh! · Battles of Legend: Monster Mayhem · #BLMM-EN145 · Secret Rare
Gem-Knight Lady Brilliant Diamond
Yu-Gi-Oh! card price for Gem-Knight Lady Brilliant Diamond: $0.26 market, from $0.05 at the cheapest listing, 1st Edition printing, updated Oct 20, 2026. Full price history since Jun 12, 2025 below.
Sellers right now
Market price is what a near-mint copy actually sold for. The cheapest listing is what a seller asks today — on thin markets the two differ a lot.
Where to buy
One year
Price story
Gem-Knight Lady Brilliant Diamond was released in June 2025. Launch-week prices are left out here: before supply arrives they are mostly guesses. Across the past year it went +85.7%, with a low of $0.09 and a high of $0.35; today it sits in the middle of that range. The cheapest listing right now is $0.05, and the 30-day average market price is $0.29.
Printings
The card in play
- Card type
- Fusion/Effect Monster
- Attribute
- EARTH
- Monster type
- Rock
3 "Gem-Knight" monsters
Must first be Fusion Summoned with the above Fusion Materials. You can only Special Summon "Gem-Knight Lady Brilliant Diamond(s)" once per turn. Once per turn: You can send 1 face-up "Gem-Knight" monster you control to the Graveyard, and if you do, Special Summon 1 "Gem-Knight" Fusion Monster from your Extra Deck, ignoring its Summoning conditions.
