Gem-Knight Lady Brilliant Diamond | Decks and Ruling

This page notes details of Gem-Knight Lady Brilliant Diamond (EARTH/Rock/Fusion Monster/Effect Monster) : decks, tips, effect and rulings. Learn and enjoy playing Yu-Gi-Oh! Duel Links!
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update 21/05/2020

Gem-Knight Lady Brilliant Diamond

Gem-Knight Lady Brilliant Diamond
Monster TypeRock
Card typeFusion / Effect
Card Effect TypeSummoning condition / Condition / Ignition Effect
ArchetypesGem- / Gem-Knight
Supports ArchetypesGem-Knight
SupportsFusion Monster


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 "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.

How to Get

PackBurning Nova [UR]
Level-up reward--
Victory against--
Card trader--




  • Excellent ATK and DEF stats.
  • Sends other face-up Gem-Knight monster you control to the Graveyard, in order to Special Summon Gem-Knight Fusion monsters from your Extra Deck. This effect can be used once per turn.


  • Must use 3 “Gem-Knight” monsters for a Fusion summon.


  • Since it is costly to Special Summon this monster, it is recommended that you add extra protection for it, as it can constantly fill your Field by replacing your weak Gem-knight monsters with powerful Gem-Knight Fusion monsters.

Gem-Knight Fusion Monster

Gem-Knight Lady Brilliant Diamond can use its effect to Special Summon any of the listed Gem-Knight Fusion monster to the Field, ignoring their Summoning conditions.

Fusion Support

Since you are most likely to perform a considerable amount of Fusion summons, you can use these cards to support your Fusion actions. Fusion Recycling Plant can recycle 1 fusion material monster to your hand, and also search for Polymerization from your deck. King of the Swamp can be treated as 1 fusion material required for Fusion Summon, and at the same time it also can be used to search 1 Polymerization from your Deck. Fusion Sage can search 1 Polymerization from your deck. Fusion Reserve allows you to add 1 of the Fusion materials listed on the Fusion monster to your hand, and add 1 Polymerization from your Graveyard to your Hand.




ActionsSends from your field to your Graveyard for cost
Summoning categories3 Fusion Materials / Strict Fusion Summon / Special Summons from your Extra Deck / Ignoring the Summoning conditions / Special Summon once per turn


Welp, this all but confirms that, if we ever gonna get Arc-V world, we're not going to get the LDS trio.

This card, along with Gem-Knight Lady Lapis Lazuli, are Masumi's ace cards in Arc-V......

Now that pretty much all Gem-Knight Fusion monster ace cards are in a box, no way they'll put her in. And if Masumi is not in, then Yaiba and Hokuto won't be in either.
<< Anonymous
Anonymous Reply
That's a shame, because I just pulled out a Prismatic Brilliant Diamond. I also kinda liked Masumi as a character, even though past episode 50 or so the show became hot trash.
<< Anonymous
Anonymous Reply
Me too. Masumi and Yaiba are good characters that deserved to be developed more.

I guess we'll have to wait and see if they will somehow added her in or not.
<< Anonymous
Anonymous Reply
I kinda liked the Synchro season of Arc-V, not just as a 5DS fan but because Roger was actually a pretty good villain imo. Season 3 is the really awful part of Arc-V. I have no idea how they managed to squander it so thoroughly.
<< Anonymous
Anonymous Reply
Nowadays we do have a chance for LDS trio still, but their ace cards are probably from Skill and we have to open box for actual copy.

But there's still another issue....what would be their level-up cards and drop cards if all their relevant cards are released already.
<< Anonymous
Anonymous Reply
It's waifu
Beautiful and powerful card.
This box isn't trash, glad to get anything I want within 90 packs so I'm done with this box with satisfy.
People say the 13th Main Box: Burning Nova is trash.
I disagree. This Gem-Knight Lady Brilliant Diamond shine so much, I burn my eyes.
This girl too op
Def is pretty low fOr 3 material fusion monster
I was just thinking how I can make my gem deck competitive and now here it is.
<< Anonymous(Slightlytilted)
Blue Boy Reply
Hope you can build a decent GK deck and overtake the meta. Seems burn with Lapis COULD possibly be the new meta here
Wow she is so strong
<< Anonymous
Anonymous Reply
Crystal Gems beware.
Finally proper Gem Knight boss monster.

Commens and feedback


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