Philosopher's Stone

Type: Holy Relic 
The Philosopher's Stone grants its owner the power to transmute base materials into gold with but a touch. Those who hold the alchemical stone are themselves immune to the power, and anything on their person. But by touching other things (including people) they are transformed into gold. 
This effectively works as a specific power, called Touch of Midas, which allows the owner of the Stone to transform large quantities of a specific material into gold. 
Those who hold the Stone or have held it for prolonged amounts of time find that their physical health has improved, and that ailments of the body due to age have lessened as well, and they will be slightly more resistant to disease. 
In alchemical circles, gold is associated with immortality and health of life. 
References:
-Philosopher's Stone on Wikipedia
-http://www.crystalinks.com/philosopherstone.html