A History of Healing Orbs is a book the player can find while exploring the basement of the Healers' House in the Great Market district of Aleroth during the events of Divinity II: Flames of Vengeance.
|“||Due to the dark events of the recent years, the Source has almost entirely stopped to produce Healing Crystals. These orbs used to appear on Source Square every winter, though we don't know if this phenomenon is temperature-related or if it has to do with the minerals in the Source stream. One thing is certain though: there is no way of telling when they'll appear and in what amount, for anomalies have been recorded over the years: such as the Summer Harvest two decades ago, when the Source yielded five crystals during the months of July and August. A way of cultivating them should be found in order to make the orbs the commercial trademark of Aleroth. Alas, many fear that dream will never be reality.||”|
– A History of Healing Orbs, Divinity II: Flames of Vengeance