publish: true
aliases:
- Gem of Brightness
created: 2026-03-09T12:15:34.132-04:00
modified: 2026-03-09T12:15:34.132-04:00
published: 2026-03-09T12:15:34.132-04:00
tags: - ttrpg-cli/compendium/src/5e/dmg
- ttrpg-cli/item/rarity/uncommon
- ttrpg-cli/item/tier/major
cssclasses: - json5e-item
obsidianUIMode: preview
Gem of Brightness
Wondrous item, major, uncommon

- Weight: 1.0 lbs.
This prism has 50 charges. While you are holding it, you can use an action to speak one of three command words to cause one of the following effects:
- The first command word causes the gem to shed bright light in a 30-foot radius and dim light for an additional 30 feet. This effect doesn’t expend a charge. It lasts until you use a bonus action to repeat the command word or until you use another function of the gem.
- The second command word expends 1 charge and causes the gem to fire a brilliant beam of light at one creature you can see within 60 feet of you. The creature must succeed on a DC 15 Constitution saving throw or become blinded for 1 minute. The creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.
- The third command word expends 5 charges and causes the gem to flare with blinding light in a 30-foot cone originating from it. Each creature in the cone must make a saving throw as if struck by the beam created with the second command word.
When all of the gem’s charges are expended, the gem becomes a nonmagical jewel worth 50 gp.
Source: Dungeon Master’s Guide p. 171. Available in the SRD