An intricately crafted needle of unalloyed gold. Removed by Millicent from her flesh. Bears no trace of befouled blood, but is faintly moist with dew. “There is something I must return to Malenia. The dignity, the sense of self, that allowed her to resist the call of the scarlet rot.”

Where to Find the Unalloyed Gold Needle

You get it as a reward for defeating the Commander O’Neil boss in Caelid.