(Japanese: ＧＳボール GS Ball) is a Key Item exclusive to Pokémon Crystal. It is a special and mysterious Poké Ball whose design appears to be a reference to Pokémon Gold and Silver, the first core series games of Generation II, as the ball has the letters "GS" inscribed upon it and is coloured both gold and silver.

Filament Colour Suggestions:

• Bambu Labs Basic Gold

• Bambu Labs Basic Silver

• Bambu Labs Matte Charcoal

• Bambu Labs Matte Ivory White