Below is a list of all the available elements in the Earth group in Doodle God across all 4 episodes.

Episode 1:
Clay
Earth
Fertilizer
Glass
Gold
Limestone
Metal
Sand
Stone

Episode 2:
Clay
Earth
Fertilizer
Glass
Gold
Limestone
Metal
Plutonium
Sand
Stone

Episode 3:
Clay
Earth
Fertilizer
Glass
Gold
Limestone
Metal
Plutonium
Sand
Stone

Episode 4:
Admantite
Clay
Earth
Glass
Gold
Metal
Mithril
Sand
Silver
Stone