Focus on this artwork and explain the abstract.
Spider is a sculpture by Louise Bourgeois. 
It was executed in 1996 as an edition of a series entitled Cells and cast in 1997; bronze with a silver nitrate patina, with the first of the edition being steel. The spider itself is made of bronze, whereas the cage is made of steel.Spider has held the record for most expensive sculptures by a woman three times in a row, and was sold for $32.1 million in 2019.
silver nitrate most expensive sculptures Louise Bourgeois