Full Idea
Because a statue and the lump of matter that constitute it have different persistence conditions, they are not identical.
Gist of Idea
A statue and its matter have different persistence conditions, so they are not identical
Source
Cynthia Macdonald (Varieties of Things [2005], Ch.4)
Book Reference
Macdonald,Cynthia: 'Varieties of Things' [Blackwell 2005], p.172
A Reaction
Maybe being a statue is a relational property? All the relational properties of a thing will have different persistence conditions. Suppose I see a face in a bowl of sugar, and you don't?