: You can manually deconstruct unwanted consumables obtained from crates—such as potions, poisons, and experience scrolls—in the Gem Extraction menu.
You can only obtain Crown Gems through the following methods: eso buy crown gems
Crown Gems are spent within the under the Crown Crates tab. Each crate "season" has its own dedicated rewards list where you can use Gems to buy: : You can manually deconstruct unwanted consumables obtained