History of Sapphiric Converter

The Sapphiric Converter is a device used by the Lubraeans to siphon power from the Sapphiric Sun, the main energy source of their planet Lubrae.

Before he joined the Witness, Rhulk killed Stalkers who had hunted his clan and took their supplies and equipment, including a Glaive and a Sapphiric Converter. The episode is recounted in the Shattered Suns lore book, which was added in The Witch Queen.