Glass Shard is a Consumable Item in Elden Ring. Most Consumables grant various effects such as restorative properties for recovering HP, removing certain negative status effects or applying temporary buffs and debuffs, while others can be thrown at enemies to deal damage.
Glass shard covered in dirt.
Because it sparkles in the light, it might be mistaken for an object of value when seen from afar.
It cannot produce light by itself. Essentially worthless.