| caption = From left to right: "[[Gem-Knight Alexandrite (anime)|Alexandrite]]", "[[Gem-Knight Lapis (anime)|Lapis]]" , and "[[Gem-Knight Emerald (anime)|Emerald]]".

 "[[Gem-Knight Emerald (character)|Gem-Knight Emerald]]" and All "[[Gem-Knight Prism Aura (character)|Gem-Knight Prism Aura]]" both appears as characters in ''[[Yu-Gi-Oh! 5D's World Championship 2011: Over the Nexus]]''. Their team symbol is a jewel droplet adorned with gold trim and two small, arced points. Its color varies according to the monster or object to which it is attached. All "Gem-Knights" monsters are [[EARTH]], whereas their [[Type]] varies between [[Pyro]], [[Thunder]], [[Aqua]], or [[Rock]] (with [[Gem-Knight Seraphinite|one]] , as well as a few [[Fairy]] as an exception), in keeping with the cardinal elements: fire, wind, water and earth, respectively. "Gem-Knights" are further subdivided into trios: each Type includes a [[Normal Monster|Normal]] member, a [[Gemini monster|Gemini]] member, and a [[Fusion Monster|Fusion]] member. 

 While the four In terms of playstyle, "Gem-Knight" Normal Monsters are shown to be unarmed, the ten monsters focus on rapidly and repeatedly Fusion Monsters wield weapons befitting Summoning their stats boss monsters by searching and effects (or lack thereof): "[[Gem-Knight Aquamarine]]" uses a bladed shield; "[[Gem-Knight Ruby]]" uses a polearm; "[[Gem-Knight Topaz]]" uses twin-bladed tonfa; "[[Gem-Knight Amethyst]]" carries a shield and what is either a wand or a slim blade; "[[Gem-Knight Citrine]]" uses a fire sword, recycling Fusion Spells and "[[Gem-Knight Prismaura]]" wields a lance and shieldMaterials. "[[Gem-Knight Zirconia]]," on the other hand, is equipped with gigantic fists seemingly to compensate for its lack of effectTheir core Fusion Spell, "[[Gem-Knight SeraphiniteFusion]]" uses a saber, and "can [[Gem-Knight Master Diamondreturn]]" uses a broadsword embedded with gems. "[[Gem-Knight Lady Lapis Lazuli]]", which deals effect damage, is depicted without any weapon."[[Gem-Knight Lady Brilliant Diamond]]" uses a simple sword. "Gem-Knight" is itself from GY to the first and, so far, only archetype to boast six "[[Polymerization]]"-styled cards: "Gem-Knight Fusion", "[[Particle Fusionhand]]", "by [[Pyroxene Fusionbanish]]", "[[Fragment Fusion]]", "[[Absorb Fusion]]", and "[[Brilliant Fusion]]". Regardless, "Gem Knights" are capable of rapidly Summoning Fusion Monsters with a mere "Gem-Knight Fusion" as its ability grants the user to repeatedly return itself to the owner's hand at the cost of banishing ing 1 "Gem-Knight" Monstermonster from GY, and with the assistance of "[[Gem-Knight Obsidian]]" and "[[Gem-Knight Lazuli]]" the user is allowed to can both recycle "Gem-Knight" Normal Monsters. As Their team symbol is a resultjewel droplet adorned with gold trim and two small, arced points. Its color varies according to the player can Fusion Summon several times from their Extra Deck during the same turnmonster or object to which it is attached. ==StoryLore=={{Main|Duel Terminal Master Guide card storylines|Master Guide 5 card storylines|Master Duel card storylines#The Pyroxene Warriors}}

===Main Deck===; Normal Monster{| class="wikitable sortable"! Gem-Knight !! OriginType !! Mineral|-| [[Gem-Knight Crystal|Crystal]] || rowspan=2 | [[Rock]] || [[wikipedia:Crystal|Crystal]]|-| [[Gem-Knight Lapis|Lapis]] || [[wikipedia:Lapis lazuli|Lapis lazuli]]|-| [[Gem-Knight Garnet|Garnet]] || [[Pyro]] || [[wikipedia:Garnet|Garnet]]

| [[Gem-Knight AlexandriteSapphire|AlexandriteSapphire]] || [[Aqua]] || [[wikipedia:AlexandriteSapphire|AlexandriteSapphire]]

| [[Gem-Knight AmberTourmaline|AmberTourmaline]] || [[Thunder]] || [[wikipedia:AmberTourmaline|AmberTourmaline]]|}; Effect Monster{| class="wikitable"! Gem-Knight !! Type !! Mineral

| [[Gem-Knight CrystalAlexandrite|CrystalAlexandrite]] || rowspan=4 | [[Rock]] || [[wikipedia:CrystalAlexandrite|CrystalAlexandrite]]

| [[Gem-Knight GarnetLazuli|GarnetLazuli]] || [[wikipedia:GarnetLapis lazuli|GarnetLapis lazuli]]

| [[Gem-Knight Obsidian|Obsidian]] || [[wikipedia:Obsidian|Obsidian]]|-| [[Gem-Knight Quartz|Quartz]] || [[Fairy]] || [[wikipedia:Quartz|Quartz]]|}; Effect Monster (Rose series)A small series of cards that simultaneously support "Gem-Knight" and "[[Melodious]]".* [[Brilliant Rose]]* [[Crystal Rose]] (although it is not a "Gem-Knight" monster); Gemini Monster{| class="wikitable"! Gem-Knight !! Type !! Mineral|-| [[Gem-Knight Amber|Amber]] || [[Thunder]] || [[wikipedia:Amber|Amber]]|-| [[Gem-Knight Iolite|Iolite]] || [[Aqua]] || [[wikipedia:Cordierite|Iolite]]|-| [[Gem-Knight Sardonyx|Sardonyx]] || [[Pyro]] || [[wikipedia:Onyx|Sardonyx]]|}===Extra Deck===; Fusion Monster (Specific Normal Monster material){| class="wikitable"! Gem-Knight !! Listed Fusion Material !! Type !! Mineral

| [[Gem-Knight LapisAquamarine|LapisAquamarine]] || rowspan=3 [[Gem-Knight Sapphire]] || [[Aqua]] || [[wikipedia:Lapis lazuliAquamarine (gemstone)|Lapis lazuliAquamarine]]

| [[Gem-Knight Lady Lapis Lazuli|Lady Lapis Lazuli]] || [[Gem-Knight Lapis]] || [[Rock]] || [[wikipedia:Lapis lazuli|Lapis lazuli]]

| [[Gem-Knight Lady Lapis LazuliRuby|Lady Lapis LazuliRuby]] || [[Gem-Knight Garnet]] || [[Pyro]] || [[wikipedia:Ruby|Ruby]]

| [[Gem-Knight ObsidianTopaz|ObsidianTopaz]] || [[Gem-Knight Tourmaline]] || [[Thunder]] || [[wikipedia:ObsidianTopaz|ObsidianTopaz]]|}; Fusion Monster (Non-specific material){| class="wikitable"! Gem-Knight !! Generic Fusion Material !! Type !! Mineral

| [[Gem-Knight SapphireAmethyst|SapphireAmethyst]] || 1 [[Aqua]] monster || [[Aqua]] || [[wikipedia:SapphireAmethyst|SapphireAmethyst]]

| [[Gem-Knight SardonyxCitrine|SardonyxCitrine]] || 1 [[Pyro]] monster || [[Pyro]] || [[wikipedia:OnyxCitrine|SardonyxCitrine]]

| [[Gem-Knight TourmalinePrismaura|TourmalinePrismaura]] || 1 [[Thunder]] monster || [[Thunder]] || [[wikipedia:TourmalinePrism (geology)|TourmalinePrism]]

| [[Gem-Knight AmethystLady Rose Diamond|AmethystLady Rose Diamond]] || 1 [[Fairy]] monster || rowspan=2 | [[Fairy]] || [[wikipedia:AmethystDiamond|AmethystDiamond]]

| [[Gem-Knight AquamarineSeraphinite|AquamarineSeraphinite]] || 1 [[LIGHT]] monster || [[wikipedia:Aquamarine (gemstone)Seraphinite|AquamarineSeraphinite]]

| [[Gem-Knight CitrineZirconia|CitrineZirconia]] || 1 [[Rock]] monster || [[Rock]] || [[wikipedia:CitrineZircon|CitrineZircon]]|}; Fusion Monster (3 "Gem-Knight" materials){| class="wikitable"! Gem-Knight !! Type !! Mineral

| [[Gem-Knight Lady Brilliant Diamond|Lady Brilliant Diamond]] || rowspan=2 | [[Rock]] || rowspan=2 | [[wikipedia:Diamond|Diamond]]

| [[Gem-Knight Pearl|Pearl]] || rowspan=2 | [[Rock]] || [[wikipedia:Pearl|Pearl]]

| [[Gem-Knight Prismaura|PrismauraFusion]] || [[wikipedia:Prism (geology)rowspan = 5 | Spell ||Prism]]Fusion Summons using hand/field materials, and can recover itself from GY. || Critically important; searchable by "Gem-Knight" support, no once-per-turn clause and can be repeatedly used and reused.

| [[Gem-Knight Ruby|RubyParticle Fusion]] || [[wikipedia:RubyFusion Summons using field materials, grants Fusion Monster ATK boost. ||Ruby]]Situational; requires field setup and ATK boost is marginally useful.

| [[Absorb Fusion]] || Searches 1 "Gem-Knight Seraphinite" card, then Fusion Summons using hand/field materials, by banishing them. Also applies Special Summoning restriction. |Seraphinite]] || [[wikipedia:Seraphinite|Seraphinite]]Situational; searching effect increases consistency, but banish fusion prevents GY effects, and also archetype-locks the player's summons.

| [[Gem-Knight Topaz|TopazBrilliant Fusion]] || [[wikipedia:TopazFusion Summons using Main Deck materials, but with ATK penalty. ||Topaz]]Important; fusing from Deck removes the need to search materials, and can even grant card advantage by strategically milling useful cards.

| [[Scatter Fusion]] || If your opponent controls a monster, Fusion Summons non-Rock "Gem-Knight Zirconia" using Main Deck materials. Also applies Extra Deck Special Summoning restriction.|ZirconiaConditionally valuable; despite also fusing from Deck, the restrictions on the card's effects forces a going-second beatdown-focused build.|-| [[Pyroxene Fusion]] || rowspan = 2 | Trap || Fusion Summons using hand/field materials. || Situational; Traps are delayed by one turn.|-| [[wikipedia:Zircon|ZirconFragment Fusion]]|| Fusion Summons using GY materials, by banishing them. || Situational; less resource intensive, but Traps are delayed by one turn.

 ==Playing style== The "Gem-Knight" employs rapid A key monster to the archetype's general strategy is their LINK 2 [[Fusion Summon|FusionLink Monster]] [[Beatdown]] strategy (similar to "[[Elemental HEROGem-Knight Phantom Quartz]]" monsters), accomplished with who is both a searcher for all archetypal cards, and also a Fusion Summoning extender able to Fusion Summon by shuffling materials in the GY or Banish Pile back into the use Deck.To quickly search out the archetype's six monsters for use as Fusion Spells/Traps and a wide array materials, the archetype can make use of recycling effectsarchetype-specific support (e.g. The : "[[Gem-KnightArmadillo]]" Normal Monsters benefit from most ), Normal Monster support cards, as well as (e.g.: "[[Gem-MerchantRescue Rabbit]]", whose effect resembles that of "[[Blackwing - Kalut the Moon ShadowUnexpected Dai]]"), or [[Rock]] support (e.g. "[[Gem-Knight AlexandriteAdamancipator Researcher]]" and , "[[Gem-ArmadilloBlock Dragon]]" provide excellent search power to facilitate this strategy). The archetype's key card is "[[Gem-Knight FusionCrystal Rose]]", which, apart from granting access to its vast arsenal of powerful Fusions, is an indirect searcher that can return itself to the hand at copy the price name of a any "Gem-Knight" banished from the Graveyard. [[Discard]] effects can come monster in handy: cards such Deck (allowing it to be used as a Fusion or Link Material), and sends a "[[Phoenix Wing Wind Blast]]Gem-Knight" can remove threats from the fieldDeck to GY, while also loading the Graveyard to pay this costwhich can trigger floating effects. "[[D.D.R. - Different Dimension ReincarnationCrystal Rose]]" and "[[Chaos ZoneBrilliant Rose]]" can re-both have effects to Special Summon themselves and copy the "Gem-Knights" banished via name of a "Gem-Knight Fusion"monster, essentially rendering the cost moot and restocking the hand with materials providing indirect searching for another specific Fusion SummonMaterials. Since you can To search out the archetype's Fusion Summon Gem-Knights using other Gem-Knight Spells, external "Fusion monsters, a Gem-Knight deck can use the effects of Amethyst and Aquamarine to eliminate troublesome Trap Cards and return monsters to the hand, making the field safer for " support cards like Gem-Knight Prismaura, Gem-Knight Citrine, and Gem-Knight Ruby. Pairing "[[Gem-Knight Master DiamondPredaplant Darlingtonia Cobra]]" with the Field Spell and "[[Catapult ZonePredaplant Ophrys Scorpio]]" is also a good tactic. As the effect of can be used, but "Master DiamondPhantom Quartz" allows it alone can be used to gain 100 ATK with every search out "[[Gem-KnightFusion]]" in the Graveyard, it's prevented from getting destroyed by battle once per turn which can then be repeatedly used and send one Rock-Type from the Deck to the Graveyard insteadreused. By feeding in cards such as "[[Gem-Knight LazuliQuartz]]", it's ATK will steadily rise over 3000, which causes it to become less vulnerable and it can come in handy when dealing with cards such as search out the powerful "[[Hieratic Sun Dragon Overlord of HeliopolisBrilliant Fusion]]". The release of both [[Xyz Monster]]s and "[[Rescue RabbitScatter Fusion]]" give , but has heavy restrictions attached to it.Two key "Gem-KnightsKnight" another welcome boost. "Rescue Rabbit" can bring out the materials for any monsters, "[[Gem-KnightObsidian]]" Fusion Monsters (or even Xyz Summoning and "[[Gem-Knight PearlLazuli]]"), have non-once per turn effects that can recycle the player's monsters when sent to the GY, compensating for the costs of Fusion Summoning and extending the effect of player's Fusion plays. "[[Gem-Knight AmberQuartz]]" can return also has a GY recycle effect if it's used as a banished "Rabbit" to the hand for further usageFusion Material, albeit being once-per-turn only.===Gem-Knight Beatdown===With The intended strategy for the release of Link Format"Gem-Knight" archetype is likely a [[beatdown]]-focused one, focusing on Fusion Summoning multiple "Gem-Knights initially sufferedKnight" Fusion Monsters, use them to remove the opponent's cards, but and defeat the opponent with the release high ATK of "[[the Fusion Monsters.===Gem-Knight Phantom Quartz]]", FTK===This is an [[FTK]] was discovered strategy focused on using the effect of "[[Gem-Knight Lady Lapis Lazuli]] to repeatedly damage the opponent, " and "[[Gem-Knight Master Diamond]]" (copying the effect of "Lady Lapis Lazuli") to re-use effects and repeatedly [[burn]] the opponent."Phantom QuartzLady Lapis Lazuli" can inflict 500 damage to recycle monsters while Summoning more Fusion Monstersthe opponent for each Special Summoned monster on the field. This led to However, "Lapis Lazuli" can only be Special Summoned once per turn, necessitating the Limiting use of "Master Diamond" to copy the effect of "Lady Lapis Lazuli" and reuse its effects. Generally, Gem-Knight FTK aims to swarm the player's own field with monsters and activate the Deck has since effects of "Lady Lapis Lazuli" once more faded from and "Master Diamond" twice to inflict around 8000 damage to the competitive sceneopponent, barring "[[Brilliant Fusion]], which continues to be a staple for many Decksachieving an FTK. 

* [[Thunder Dragon Colossus]](OCG or Traditional Format only)

* [[Gem-Knight Pearl]]* [[Gallant Granite Loyalist]] 

* [[Aussa the Earth Charmer, AloftImmovable]]

 |normal spells =

|normal traps =* [[D.D.R. - Different Dimension ReincarnationBrilliant Spark]]* [[Thunder Dragon Fragment Fusion]] |traps =* [[Gem-Enhancement]]* [[Back to the Front]] / |continuous traps =* [[Call of the Haunted]]

One of the most effective ways to cripple it is to activate a card like "[[Cursed Seal of the Forbidden Spell]]" or "[[Armageddon Designator]]" (the latter if your opponent also just so happens to be using "Gem* Anti-Knights" too)Fusion/Special Summoning floodgates, which can render it unusable for the rest of the Duel. such as "[[Non-Fusion Area]]" can also damage its play-style, blocking all attempts at Fusion Summoning, leaving the Deck at a severe disadvantage (plus "[[Anti-Fusion DeviceArchlord Kristya]]" and , "[[Steelswarm Sting]]" can expunge Fusions on the field). "[[Torrential Tribute]]" and "[[Needle CeilingDimensional Barrier]]", if activated at the right time, can also knock the "Gem-Knight" player off balance. It is also for this reason that "[[Monarch]]" decks can easily defeat "Gem-Knights"; by locking down their Extra Deck with or "[[Domain of the True Monarchs]]", "Gem-Knights" effectively lose, being robbed of their most powerful cardscan completely shut off the deck's game plan. A more typical concern would be anti* Anti-Special Summoning cards such as "[[Archlord Kristya]]", which are not as easily dealt with once on the field. Due to the [[Gemini Monster]] portion of the archetype, however, support Spell floodgates like "[[Gemini Spark]]" can be used to handle threats of this nature. The same applies for cards like "[[Macro CosmosNaturia Beast]]" or "[[Dimensional FissureImperial Order]]," so that they will not disrupt the stream of Fusions. Occasionally, a "Gem-Knight" player's hand may clog up with Normal Monsters in a moment where "Gem-Knight Fusion" is nowhere to be found. This condition can be even worse if "[[Rescue Rabbit]]" also included in prevent the mix, since "Rabbit" can only Special Summon those Normal Monsters deck from the Deck. using "[[Gem-TurtleKnight Fusion]]" can sometimes provide a remedy, as it retrieves a copy from the Deck and places it in the hand, but some players consider it dangerously slow in a fast-paced meta. Unfortunately, there is no guaranteed alternative available yet to solve this problem (* GY floodgates like "[[Pot of DualityMacro Cosmos]]" can be used, but not only will it suspend Fusion Summoning for a turn, but it also may not work as intended). Proper [[Deck Thinning]] cards can be used to increase prevent the odds of drawing the correct cards; "[[Thunder Dragon]]" and "[[Volcanic Shell]]" are prime candidates for this role. If one or both are utilized, consider focusing the Deck around deck from recovering "[[Gem-Knight Prismaura]]" and Fusion"[[Gem-Knight Citrine]]," since "[[Thunder Dragon]]" and "[[Volcanic Shell]]" are [[Thunder]]-[[Type]] and [[Pyro]]-Type, listed as materials on the above-mentioned cards, respectively. * Most "Gem-Knight" Decks that utilize either decks use "[[Gem-Knight AlexandritePhantom Quartz]]" or "Rescue Rabbit" are also susceptible as their only way to "[[Mirror of Oaths]]", resulting a possibly loss of momentum. "[[Skill Drain]]" can also dangerous, since it will disable most in-field search "Gem-Knight" Fusion Monster's effect such as "Citrine", "Prismaura" or "[[Gem-Knight Seraphinite]]".  Cards like "[[Naturia Beast]]", "[[Naturia Exterio]]" and "[[Horus the Black Flame Dragon LV8]]" also pose a serious threat, since they can stop "Gem-Knight Fusion" from working no matter how many times making it is returned to the hand. Finally, "Gem-Knights" alone have no way of bouncing back into play once they're [[banish]]ed, making "[[Macro]]" Decks a mismatch for them. The introduction of the [[Extra Monster Zone]] severely weakens the Deckdeck's ability to Fusion Summon multiple "Gem-Knights" at once, though the introduction of [[Gem-Knight Phantom Quartz]] does somewhat mitigate thismain chokepoint. 

* This archetype appears to be based on the "[[Elemental HERO]]" archetype, since a few of their monsters' poses are based on the share similar stats (Level/ATK/DEF) and poses of the with some "Elemental HERO" monsters.<ref>{{cite web |url=http://www.pojo.biz/board/showthread.php?p=22284095#post22284095 |title=<nowiki>[Official Thread]</nowiki> Hidden Arsenal 4 : Special Edition post #120 |author=[[Kevin Tewart]] |date=July 21, 2011 (UTC) |publisher=Pojo.com Forums}}</ref><ref>{{cite web |url=http://www.pojo.biz/board/showthread.php?p=22284170#post22284170 |title=<nowiki>[Official Thread]</nowiki> Hidden Arsenal 4 : Special Edition post #125 123 |author=[[Kevin Tewart]] |date=July 21, 2011 (UTC) |publisher=Pojo.com Forums}}</ref><ref>{{cite web |url=http://www.pojo.biz/board/showthread.php?p=22284193#post22284193 |title=<nowiki>[Official Thread]</nowiki> Hidden Arsenal 4 : Special Edition post #125 |author=[[Kevin Tewart]] |date=July 21, 2011 (UTC) |publisher=Pojo.com Forums}}</ref>** "Gem-Knight" monsters are all of one Attribute ([[EARTH]]), yet have a variety of Types, whereas the anime-based "Elemental HERO" monsters are all of one Type ([[Warrior]]), but of different Attributes.* In context of the "gem" theme, this archetype also appears to be based on the "[[Crystal Beast]]" archetype, since [[Jaden Yuki]] and [[Jesse Anderson]] were friends in the [[Yu-Gi-Oh! GX|anime]] (who used an "Elemental HERO" Deck and a "Crystal Beast" Deck, respectively). * While the four "Gem-Knight" monsters Normal Monsters are all of one Attribute shown to be unarmed, the Fusion Monsters wield weapons befitting their stats and effects (or lack thereof):** "[[Gem-Knight Aquamarine]]" uses a bladed shield** "[[Gem-Knight Ruby]]" uses a polearm** "[[Gem-Knight Topaz]]" uses twin-bladed tonfa** "[[Gem-Knight Amethyst]]" carries a shield and what is either a wand or a slim blade** "[[EARTHGem-Knight Citrine]]" uses a fire sword** "[[Gem-Knight Prismaura]]" wields a lance and shield** "[[Gem-Knight Zirconia]]" is equipped with gigantic fists** "[[Gem-Knight Seraphinite]]" uses a saber** "[[Gem-Knight Master Diamond]]" uses a broadsword embedded with gems.** "[[Gem-Knight Lady Lapis Lazuli]])", which deals effect damage, yet have is depicted without any weapon.** "[[Gem-Knight Lady Brilliant Diamond]]" uses a variety of Typessimple sword.* "Gem-Knight" is the first and, so far, whereas the animeonly archetype to boast seven "[[Polymerization]]"-styled cards: "[[Gem-based Knight Fusion]]", "[[Particle Fusion]]", "[[Pyroxene Fusion]]", "[[Fragment Fusion]]", "[[Absorb Fusion]]", "[[Brilliant Fusion]]", and "[[Scatter Fusion]]".* The archetypal Spell Card "Elemental HERO[[Brilliant Fusion]]" monsters are all formed a splashable engine outside of one Type ("Gem-Knight" archetypal decks, as it can Fusion Summon "[[WarriorGem-Knight Seraphinite]])" using materials from the Deck, granting an Extra Normal Summon, a Level 5 on-field monster, but of different Attributesand mill a specific LIGHT monster into the GY.

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