Identify Earths (sage ability)

Provides knowledge on naturally occurring substances that are solid and without life, enabling identification by hardness, lustre, colour, streak, cleavage, fracture, density and so on. More specific tests for minerals include reaction to acid, magnetism, taste or smell.

While the character can identify common minerals on sight, there are a variety of rare earths whose nature can only be determined in the lab. These include all minerals containing mithril, adamantium, scandium, yttrium, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium and lutetium. Note that none of these 'elements' have been isolated at the time that the game world takes place, but the minerals themselves do figure in alchemical creations. To determine the specific form of any earth that cannot be determined on sight requires one week spent in a laboratory and the destruction of 1 ounce of the material to be determined.

Other earths, and the metals that can be drawn from them, will be known to the character, often after only a few minutes of inspection. Some might take as much as a few hours to decipher, but this is examination that can be done in the field, not requiring a laboratory.