Atiki was commonly made from what material?

Nephrite

Explanation:

A tiki is a traditional ornament that was made by the Maori people of the Pacific islands. These were the Polynesian first settlers of New Zealand.  The tikis were made of a material known as nephrite. This is a type of stone closely related to jade. The material is difficult to work with, making the resulting tikis all the more unique and valuable.

hi     (had to add 20 words)