Precious Metal Plate

Precious Metal Plate
Skill: divination/metal 18
Backlash: 16
Difficulty: 11
Effect Value: 32
Bonus Number to: effect
Range: touch
Duration: 32 (one month)
Cast Time: 14 (10 minutes)
Manipulation: duration, range, speed
This is a focused spell. The mage enchants a plate by
placing dozens of pieces of iron pyrite or illusory gold (or other illusory
precious metal) onto its surface. Alongside each fake, he places one small real
piece of each precious metal the plate is to detect. He removes the false
metals one at a time, until only the true precious metals are left. He then
casts the spell. To test the plate, he drops the pieces of metal (one at a
time) to be examined onto the plate. If the spell was successful, each real
metal produces a distinct tone when it falls, while the fake metals are
soundless. The user activates the plate by placing the metal onto it. The
effect value of the spell is compared to the disbelief value of the metal
sampled (if the metal is illusory), or the casting total used to create any truly
transformed metal. Precious metals to which the plate has not been attuned will
still sometimes register with a funny, hollow sound.