|“||Accumulates experience as you complete Dungeons, Battle Arena and Bomber Royale matches. When fully charged it produces 35 Gleamstone. This effect can only trigger once a week.||”|
— Item Tooltip
The Gleamstone Guidebook is a Legendary Tome that can be crafted at the Crystallogy Workbench. They produce 35 Gleamstone, when they are fully charged. Unlike Common Tomes (that can be used as often as you like without cooldowns), these tomes can only be used once a week, although, they provide more rewards than Common Tomes per individual use.
(Skill Level 50)