For the three consecrated items (i.e. spark gear) I can make (bracers, belt, shoulders), none of them are able to use Weavercloth Embroidery Thread (+ingenuity) or Preserving EmbroideryThread (+resourcefulness), and are able to use Mirror Powder (+multicraft), which doesn’t do anything for crafted gear. Algari Competitor Gear that I can use finishing reagents on has the same issue. None of the rare gear or other items I can make has this issue, and I can’t currently see if it affects other armor slots or just the three I can make.