Spell Catalysts...

There are natural minerals and plants, some even magical in composition, that have proven effects on spellcasting. Using a component consumes the component in question and the raw essence of the material is then incorporated in the energy of the spell.

Lifestone (at least 50 gp per heightened spell level): a grey material that can shine up like platinum, lifestone actually counteracts arcane spells. Lifestone boosts the power of any divine, runic, or harmonic spell, allowing the caster to cast the spell using the Heighten Spell feat without needing to expend a spell slot of that level. The caster must be able to cast spells of the heightened level in order to use this spell catalyst.

Diamond (at least 500 gp): This mineral is a natural amplifier and doubles the benefit of other materials used to cast the spell. It also serves as a link to the spiritual realm, and as a result any creatures summoned are improved by two hit dice or one category (you may cast monster summoning II and select a monster from the monster summoning IV table).

Emerald (at least 100gp): Emerald is one of the most powerful healing stones. Its soothing energies are calming, helping you reach a relaxed state more easily. They can also enhance dreams, memory, and insight, as well as dispel negative energies. Emerald dust gives you a competency bonus of +2 towards any concentration checks needed to successfully cast the spell, a +2 to overcome any spell resistance checks, and a +2 to the craft check in creating magic items. If used with a healing spell, emerald can cure an additional 1d8 damage for each 100 gp used in the spell, to a maximum of doubling the number of dice the spell originally cures.

Red Gold (at least 100 gp) amongst the most powerful of magic minerals, this component effectively doubles the spell level towards the DC of the saving throw (so a 2nd level spell would have a base DC of 14 instead of 12). Alternatively, for the cost of 100gp/per spell level adjustment, you can apply any metamagic feat to a spell without paying the cost of additional spell levels.

Amber (at least 100 gp) when used with any healing spell, can be used to cure in addition one of the following ailments: stunned, paralyzed, enraged, confused. If the ailment is the result of an active spell, this mineral allows a resave immediately after the healing spell is cast.

Jade (at least 50 gp) Increases potency of divinations and scrying. Increases success of divination by 10% or +2 for opposed checks.