Using multiple stone technologies suggests advanced artistic skills.

Evidence

This little sculpture is the result of four separate stone technologies. … In execution as well as in conception, this is a very complex work of art. — Neil MacGregor, A History of the World in 100 Objects, 109

Categorization

• corroborated: 2 independent passages support this claim — Neil MacGregor, A History of the World in 100 Objects, 109