This is a religious based spell that creates a holy relic to be used in tradeskills to enhance the powers of items. Each gem is deity specific and the caster has to worship that diety.
Here is a full list of spells (diety) with location sold:
Imbue Black Pearl (Prexus) Erudin temple of Quellious n647,n141
Imbue Black Sapphire (Bertox) Qeynos Catacombs p357,n289
Imbue Diamond (Mithanial Marr) Freeport Cleric Guild n94,p341
Imbue Emerald (Tunare) Felwithe Cleric Guild p12,n280
Imbue Opal (Rodcet Nife) Qeynos Cleric/Pally Guild n75,n146
Imbue Peridot (Bristlebane) Ak'Anon Cleric Guild p1288,n571; Rivervale Cleric Guild n226,n311
Imbue Plains Pebble (Karana) Druid ring in N. Karana
Imbue Rose Quartz (Erollisi Marr) Freeport Cleric Guild n94,p341
Imbue Ruby (Brell Serilis) Ak`Anon Cleric Guild p1288,n571; Kaladim Cleric Guild p716,p132
Imbue Sapphire (Innoruuk) Neriak Cleric Guild p562,n812
Imbue Topaz (Quellious) Erudin Temple of Quellious n647,n141
Edited, Sat Feb 22 15:43:13 2003