U-TREASURE has announced that they will be selling Metamon necklaces. The pink gold-plated version will only be available for a limited time from April 1st, 2021 until April 29th, 2021 or until 30 necklaces are ordered. It is also available in 4 different metals: White Gold, Pink Gold, Yellow Gold, and Platinum. The other versions will be available from April 1st, 2021 until supplies last. An Imageboard thread has been added that features pictures of these necklaces.

Product Details:

The Metamon necklace is now available in a pink gold-plated version! Metamon is the Transform Pokémon with an amazing ability to transform and become friends with anything. This three-dimensional necklace represents its flexible shape-shifting ability. Metamon holding on to the necklace chain ring is adorable. Wearing it, you may be "Flexible" for what you need to do right now.

Specifications:

Materials: Pink Gold Plated, White Gold, Pink Gold, Yellow Gold, and Platinum.
Chain length: 45cm (1.0mm width) with adjustable ring
Motif: 10.8mm, 14.5mm, 9.0mm thickness
Item Numbers: NPOL-154-SPP / NPOL-154-K18WG / NPOL-154-K18PG / NPOL-154-K18YG / NPOL-154-PT
Prices: 17,600 yen / 60,500 yen / 60,500 yen / 60,500 yen / 71,500 yen (tax included)

Source: https://www.u-treasure-onlineshop.jp/fs/utre/c/metamon