Thoughts on Powerstones

[Whitewings]

For a specific setting, I’m considering some changes to the Powerstone spell. First, a Powerstone must be a gem; specifically, it must be a clear quartz crystal massing at least P/5 grams. Second, the crystal must be flawless, but a crystal that’s been, let’s say clarified, with Shape Earth or similar is perfectly acceptable. Obviously this means that Powerstones are less expensive, because the material is cheaper. But what else might change? The change is for two reasons: one, I really don’t like tying storage potential to dollar cost, and two, the planetary and zodiacal modifiers are extremely important in the setting, so Powerstones cannot be made of a material that resonates with any sign or planet, or to put it another way, must be made from a material that doesn’t oppose any.