Kings' tears

King's Tears (also seen as Kings' Tears) were sometimes called frozen tears, or lich weepings. Unique to the Realms, they were transparent teardrop-shaped stones with a smooth surface and seemed unbreakable by physical force. Folklore suggests these stones are the crystallized tears of long-dead necromancer kings and in each jewel can be seen that which the weeping king loved ages ago. The truth remains unknown but sages valued these gems most of all. A typical specimen had a base value of 5000 gp