Fragile (ego)
Version 0.18: This article may not be up to date for the latest stable release of Crawl.
Fragile is a property (or ego) that generates exclusively on some powerful artefacts. Unequipping or unwielding an item with this ego will permanently destroy it.
The game will display a warning prompt before attempting to remove or unwield a fragile item.
Desirability
Fragile artefacts tend to have more powerful properties than similar artefacts of the same type, but their obvious downside is their inability to swap them out for other items. This makes them a poor choice for ranged weapons and some melee weapons, but a potential option for some jewellery and armours, depending on the other egos that generate alongside it.
While this ego is fairly uncommon, it is a good practice to identify any desirable unknown artefact before equipping it; once a fragile item is removed, it is unrecoverable.
History
Fragile was added in 0.18.