The Gemnyans (Japanese: 宝石ニャン Hoseki-nyans), or Jewel-nyans, are a group of Rank A Jibanyan reskins with a gemstone motif, introduced in Yo-kai Watch.

To befriend any one Gemnyan, one must purchase their respective Yo-kai Medals, then scan a QR Code to receive a special Crank-a-kai coin. When used, the coin awards a bell that makes the Gemnyan appear somewhere in Springdale, where it can be battled once a day until it's befriended.

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