In Genshin Impact, the premium currency genesis crystal(https://www.lootbar.com/top-up..../genshin-impact-top- ) is used to purchase exclusive bundles, character skins, and convert into Primogems for wishes.
A genshin impact genesis crystal(https://www.lootbar.com/top-up..../genshin-impact-top- ) top-up can be done through external platforms like Codashop, SEAGM, or UniPin, which require your game UID and selected amount.