# Gem of Brightness > [!info] Item Details > | | | > |---|---| > | **Category** | Wondrous Items | > | **Rarity** | Uncommon | > | **Attunement** | No | > | **Source** | DMG p.171 | --- ## Description 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: **First word (0 charges):** The gem sheds bright light in a 30-foot radius and dim light for an additional 30 feet. This effect doesn't expend a charge and lasts until you repeat the command word or use another function of the gem. **Second word (1 charge):** You cause the gem to fire a brilliant beam of light at one creature you can see within 60 feet. The creature must succeed on a DC 15 Constitution saving throw or become blinded for 1 minute. A blinded creature can repeat the saving throw at the end of each of its turns, ending the effect on a success. **Third word (5 charges):** You cause the gem to flare with blinding light in a 30-foot cone. Each creature in the cone must make a saving throw as with the second word's beam. The gem regains no expended charges. --- ## Properties - 50 total charges (never regains). - Command 1 (free): shed **bright light (30 ft)** and dim light (30 ft). - Command 2 (1 charge): **DC 15 Constitution save** or one creature within 60 ft is **blinded for 1 minute**. - Command 3 (5 charges): 30-ft cone — DC 15 Con save or blinded for 1 minute. - No attunement required.