Can be useful to use the clan Stronghold to donate materials, gems (and rune fragments)? At the lowest level.

In the Forge, for example, the jarl clicks on the name of the material, and is asked if and how much he wants to move to the Stronghold. Freely available to other Clan jarls.

In a new environment, option, yet to be added in the Stronghold.

Thank you for your attention.

I apologize for my not good English language.