Guild Wars 2

can i forge sigils… I’m lost i can click on some of them but not all of them can go in the forge

All minor and major sigils can be forged. Most superior sigils cannot be forged, however. Those that can are usually because they form part of a recipe to get another specific weapon.

I believe the superiors that can forged are used in gifts of legendaries
I can’t think of a single other recipe that calls for a superior sigil. you may of noticed there are no superior runes that can be forged.