Stalcraft Wiki: MIS-122 Amethyst

In-game description (EXBO)

One of the latest works in the "foil" series, created in an attempt to provide the wearer with the maximum possible protection against anomalous effects. Like other MISs, the Amethyst is hardly a good armor for combat encounters, but its anomalous protection ratings combined with an affordable build make it a comfortable choice for exploring any archianomaly!

Quoted from the game's own text in EXBO's public game data. Not written by STALCRAFT Meta.