Gem-Knight Alexandrite
Level 4 EARTH/Rock Effect1800 ATK / 1200 DEF
You can Tribute this card; Special Summon 1 "Gem-Knight" Normal Monster from your Deck.
Gem-Knight Amber
Level 4 EARTH/Thunder Gemini Effect1600 ATK / 1400 DEF
This card is treated as a Normal Monster while face-up on the field or in the Graveyard. While this card is face-up on the field, you can Normal Summon it to have it become an Effect Monster with this effect.
● Once per turn: You can send 1 "Gem-Knight" card from your hand to the Graveyard to target 1 of your banished monsters; add that target to your hand.
Gem-Knight Amethyst
Level 7 EARTH/Aqua Fusion Effect1950 ATK / 2450 DEF
1 "Gem-Knight" monster + 1 Aqua-Type monster
Must first be Fusion Summoned. When this card is sent from the field to the Graveyard: Return all Set Spell and Trap Cards on the field to the hand.
Gem-Knight Aquamarine
Level 6 EARTH/Aqua Fusion Effect1400 ATK / 2600 DEF
"Gem-Knight Sapphire" + 1 "Gem-Knight" monster
Must first be Fusion Summoned with the above Fusion Material Monsters. If this card attacks, it is changed to Defense Position at the end of the Battle Phase. When this card is sent from the field to the Graveyard: Target 1 card your opponent controls; return that target to the hand.
Gem-Knight Citrine
Level 7 EARTH/Pyro Fusion Effect2200 ATK / 1950 DEF
1 "Gem-Knight" monster + 1 Pyro-Type monster
Must first be Fusion Summoned. If this card attacks or is attacked, your opponent cannot activate cards or effects until the end of the Damage Step.
Gem-Knight Crystal
Level 7 EARTH/Rock Normal2450 ATK / 1950 DEF
A Gem-Knight officer of high rank, who has optimized the use of the crystal powers. Despite his ability to overwhelm most opponents, he's wary of stretching himself too thin, and opts for solidarity with his comrades.
Gem-Knight Dispersion
Normal SpellActivate 1 of these effects (but you can only use each effect of "Gem-Knight Dispersion" once per turn);
● Fusion Summon 1 "Gem-Knight" Fusion Monster from your Extra Deck, using monsters from your hand or field. Up to 2 monsters from your Deck/Extra Deck can be used, if they are non-Rock "Gem-Knight" monsters and you have "Gem-Knight Fusion" in your GY.
● Add 1 "Gem-" monster from your Deck or banishment to your hand, also any effect damage your opponent takes during the Main Phase this turn is halved.
Gem-Knight Emerald
Level 4 EARTH/Rock Effect1800 ATK / 800 DEF
You can banish this face-up card you control and 1 face-up Normal Monster you control to target 1 "Gem-Knight" Fusion Monster in your Graveyard; Special Summon it from the Graveyard.
Gem-Knight Fusion
Normal SpellFusion Summon 1 "Gem-Knight" Fusion Monster from your Extra Deck, using monsters from your hand or your side of the field as Fusion Materials. If this card is in your Graveyard: You can banish 1 "Gem-Knight" monster from your Graveyard; add this card to your hand.
Gem-Knight Garnet
Level 4 EARTH/Pyro Normal1900 ATK / 0 DEF
The Gem-Knight Warrior who carries the Garnet Soul. His Flaming Iron Fist crushes all enemies.
Gem-Knight Hollowcore
Level 7 DARK/Fiend Effect1950 ATK / 2450 DEF
You can send 1 "Gem-Knight" Normal Monster or 1 "Gem-Knight Fusion" from your Deck to the GY; Special Summon this card from your hand in Defense Position. When your opponent activates a card or effect, while you control a "Gem-Knight" Fusion Monster (Quick Effect): You can banish 3 "Gem-Knight" cards from your GY, including this card; negate that effect, then all "Gem-Knight" monsters you currently control gain 1000 ATK. You can only use each effect of "Gem-Knight Hollowcore" once per turn.
Gem-Knight Iolite
Level 4 EARTH/Aqua Gemini Effect1300 ATK / 2000 DEF
This card is treated as a Normal Monster while face-up on the field or in the Graveyard. While this card is face-up on the field, you can Normal Summon it to have it become an Effect Monster with this effect.
● Once per turn: You can banish 1 "Gem-" monster from your Graveyard to target 1 "Gem-Knight" card in your Graveyard; add that target to your hand.
Gem-Knight Lady Brilliant Diamond
Level 10 EARTH/Rock Fusion Effect3400 ATK / 2000 DEF
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.
Gem-Knight Lady Lapis Lazuli 51
Level 5 EARTH/Rock Fusion Effect2400 ATK / 1000 DEF
"Gem-Knight Lapis" + 1 "Gem-Knight" monster
Must first be Fusion Summoned with the above Fusion Materials. You can only Special Summon "Gem-Knight Lady Lapis Lazuli(s)" once per turn. Once per turn: You can send 1 "Gem-Knight" monster from your Main Deck or Extra Deck to the Graveyard, and if you do, inflict 500 damage to your opponent for each Special Summoned monster on the field.
Gem-Knight Lady Rose Diamond
Level 8 EARTH/Fairy Fusion Effect2700 ATK / 2400 DEF
1 "Gem-Knight" monster + 1 Fairy monster
Once per opponent's turn, the first time a "Gem-Knight" monster(s) you control would be destroyed by card effect, it is not destroyed. During your turn, when your opponent activates a monster effect (Quick Effect): You can banish 1 "Gem-Knight" card from your GY, then target 1 face-up card your opponent controls; destroy it.
Gem-Knight Lapis
Level 3 EARTH/Rock Normal1200 ATK / 100 DEF
The best of friends with Lazuli, this soldier deeply cares about the well-being of her friends.
Gem-Knight Lazuli
Level 1 EARTH/Rock Effect600 ATK / 100 DEF
If this card is sent to the Graveyard by a card effect: You can target 1 Normal Monster in your Graveyard; add that target to your hand.
Gem-Knight Master Diamond 
66
Level 9 EARTH/Rock Fusion Effect2900 ATK / 2500 DEF
3 "Gem-Knight" monsters
Must first be Fusion Summoned. This card gains 100 ATK for each "Gem-" monster in your Graveyard. Once per turn: You can banish 1 Level 7 or lower "Gem-Knight" Fusion Monster from your Graveyard; until the End Phase, this card's name becomes that monster's, and replace this effect with that monster's original effects.
Gem-Knight Master Diamond Dispersion
Level 9 EARTH/Rock Fusion Effect3000 ATK / 2600 DEF
3 "Gem-" monsters
During the Main Phase (Quick Effect): You can send this card from the field to the GY; Special Summon up to 3 non-Rock "Gem-" monsters with different names from your Extra Deck and/or GY, ignoring their Summoning conditions, also for the rest of this turn, you cannot Special Summon from the Extra Deck, except Fusion Monsters. When your "Gem-Knight" Fusion Monster is destroyed by battle, while this card is in your GY: You can Special Summon this card. You can only use each effect of "Gem-Knight Master Diamond Dispersion" once per turn.
Gem-Knight Nepyrim
Level 4 LIGHT/Fairy Effect1550 ATK / 1600 DEF
If this card is Normal or Special Summoned: You can add 1 "Gem-Knight" card from your Deck to your hand, except "Gem-Knight Nepyrim", also any effect damage your opponent takes during the Main Phase this turn is halved. During your Main Phase, you can: Immediately after this effect resolves, Normal Summon 1 "Gem-" monster. If this card is sent from the hand or Deck to the GY: You can send 1 card from your hand to the GY, and if you do, Special Summon this card. You can only use each effect of "Gem-Knight Nepyrim" once per turn.
Gem-Knight Obsidian
Level 3 EARTH/Rock Effect1500 ATK / 1200 DEF
If this card is sent from the hand to your Graveyard: You can target 1 Level 4 or lower Normal Monster in your Graveyard; Special Summon that target.
Gem-Knight Pearl
Level 4 EARTH/Rock Xyz2600 ATK / 1900 DEF
2 Level 4 monsters
Gem-Knight Phantom Quartz
Link 2 EARTH/Rock Link Effect1450 ATK
2 "Gem-" monsters
If this card is Link Summoned: You can add 1 "Gem-Knight" card from your Deck to your hand. You can pay 1000 LP; Fusion Summon 1 "Gem-Knight" Fusion Monster from your Extra Deck, by shuffling Fusion Materials in your possession listed on it into your Deck, that are banished or in the GY, but it cannot attack directly this turn. You can only use each effect of "Gem-Knight Phantom Quartz" once per turn.
Gem-Knight Prismaura
Level 7 EARTH/Thunder Fusion Effect2450 ATK / 1400 DEF
1 "Gem-Knight" monster + 1 Thunder-Type monster
Must first be Fusion Summoned. Once per turn: You can send 1 "Gem-Knight" card from your hand to the Graveyard to target 1 face-up card on the field; destroy that target.
Gem-Knight Quartz
Level 4 EARTH/Fairy Effect1500 ATK / 1500 DEF
If your opponent controls a monster: You can discard this card; Set 1 "Fusion" Continuous Spell directly from your Deck, also you cannot Special Summon monsters from the Extra Deck for the rest of this turn, except "Gem-Knight" monsters. If this card is used as material for a Fusion Summon, and sent to the GY or banished: You can add 1 "Gem-Knight" monster from your GY to your hand, except "Gem-Knight Quartz". You can only use each effect of "Gem-Knight Quartz" once per turn.
Gem-Knight Ruby
Level 6 EARTH/Pyro Fusion Effect2500 ATK / 1300 DEF
"Gem-Knight Garnet" + 1 "Gem-Knight" monster
Must first be Fusion Summoned with the above Fusion Material Monsters. Once per turn: You can Tribute 1 face-up "Gem-" monster; this card gains ATK equal to the Tributed monster's ATK on the field, until the End Phase. If this card attacks a Defense Position monster, inflict piercing Battle Damage to your opponent.
Gem-Knight Sapphire
Level 4 EARTH/Aqua Normal0 ATK / 2100 DEF
His Sapphire power commands the waters to protect him from attack. His comrades trust in his silent protection.
Gem-Knight Sardonyx
Level 4 EARTH/Pyro Gemini Effect1800 ATK / 900 DEF
This card is treated as a Normal Monster while face-up on the field or in the Graveyard. While this card is face-up on the field, you can Normal Summon it to have it become an Effect Monster with this effect.
● When this card destroys an opponent's monster by battle and sends it to the Graveyard: You can add 1 "Gem-Knight" card from your Deck to your hand.
Gem-Knight Seraphinite
Level 5 EARTH/Fairy Fusion Effect2300 ATK / 1400 DEF
1 "Gem-Knight" monster + 1 LIGHT monster
Must first be Fusion Summoned with the above Fusion Materials. During your Main Phase, you can Normal Summon/Set 1 monster in addition to your Normal Summon/Set. (You can only gain this effect once per turn.)
Gem-Knight Topaz
Level 6 EARTH/Thunder Fusion Effect1800 ATK / 1800 DEF
"Gem-Knight Tourmaline" + 1 "Gem-Knight" monster
Must first be Fusion Summoned with the above Fusion Material Monsters. This card can attack twice during each Battle Phase. When this card destroys a monster by battle and sends it to the Graveyard: Inflict damage to your opponent equal to the ATK of the destroyed monster in the Graveyard.
Gem-Knight Tourmaline
Level 4 EARTH/Thunder Normal1600 ATK / 1800 DEF
He channels mystic energies and changes them into fighting strength through the power of Tourmaline. Many admire his way of life.
Gem-Knight Zirconia
Level 8 EARTH/Rock Fusion2900 ATK / 2500 DEF
1 "Gem-Knight" monster + 1 Rock-Type monster