I'm gonna go with stone.
Stone monolithic sculptures.
They lived near coastal rivers and made huge stone heads.
The stone heads made by the Olmec civilization weigh anywhere from 20 to 40 tons.
it was really small and made out of brick or stone
The giant stone heads in Villahermosa, Mexico were built by the Olmec civilization. These colossal stone sculptures are known for their distinctive features and are considered among the most iconic artifacts of the Olmec culture.
One type of stone the Mayan valued highly was a stone called or named Jade
they were mostly made of limestone, but also could have been stone, sand and other common materials mixed in or used such as dirt
Mayan necklaces were often made of jade, a precious stone highly valued by the Mayan culture for its beauty and significance. Other materials used for Mayan necklaces included shells, seeds, and precious metals such as gold and silver. These necklaces were often worn for ceremonial and religious purposes.
800bc
There are around 900 Moai (stone heads) on Easter Island.
the Mayan....
they made stone heads