U-Treasure, a company that deals in authentic character jewelry for adults, will accept reservations from Monday, December 26th, 2022 to Tuesday, January 31st, 2023, for the pink-colored versions of the Koiking necklace from Pocket Monsters. The necklace is available in Silver (Pink Gold coated) and K18 Pink Gold, in a limited quantity of 129 pieces each, as that matches its National Dex number of 129. It will be available at the U-Treasure Concept Store Ikebukuro and the U-Treasure Online Shop. The gold coated version was available last year.

Pokémon Necklace Koiking

The new Silver with Pink Gold Coating and K18 Pink Gold versions are now available! The moment when the Koiking "Splashes" has been made into a necklace. It is full of weakness, pity, and sorrow. Let's be healed by the lovable Koiking. Make your reservation as soon as possible!

Price including tax and material: 12,900 yen (Silver with Pink Gold coating), 129,000 yen (K18 Pink Gold)

Source: https://u-treasure.jp/licensor/pocketmonsters