Hades 
God of... 
the dead, king of the underworld, hidden wealth of the earth, from the fertile soil with nourished the seed-grain, to the mined wealth of gold, silver and other metals
Symbols of... 
cerberus, royal scepter, cornucopia, screech-owl, two-pronged spear, black rams and bulls
Colors... 
black, gold, and silver
Scents... 
winter scents, cypress, amber, and pomegranate
Sacred Plants... 
asphodel, mint, white poplar, narcissus/daffodil, cypress
Crystals... 
obsidian, black tourmaline, copper, nuumite, fossils, hematite, jet