"
Gem-Knight" (
Jemunaito) is an
archetype that was released in
Duel Terminal - Vylon Descends!!. They are used by
Julia Krystal in the
Yu-Gi-Oh! ARC-V anime.
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" are
EARTH, whereas their
Type varies between
Pyro,
Thunder,
Aqua, or
Rock (with
one 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 member, a
Gemini member, and a
Fusion member.
While the four "Gem-Knight" Normal Monsters are shown to be unarmed, the ten 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; "
Gem-Knight Citrine" uses a fire sword, and "
Gem-Knight Prismaura" wields a lance and shield. "
Gem-Knight Zirconia," on the other hand, is equipped with gigantic fists seemingly to compensate for its lack of effect, "
Gem-Knight Seraphinite" uses a saber, and "
Gem-Knight Master Diamond" 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 the first and, so far, only archetype to boast six "
Polymerization"-styled cards: "Gem-Knight Fusion", "
Particle Fusion", "
Pyroxene Fusion", "
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 1 "Gem-Knight" Monster, and with the assistance of "
Gem-Knight Obsidian" and "
Gem-Knight Lazuli" the user is allowed to recycle "Gem-Knight" Normal Monsters. As a result, the player can Fusion Summon several times from their Extra Deck during the same turn.