Very sweet gold clip-on earrings in flower motif by the American costume jewellery maker, Lisner. 

Lisner was established in New York in 1904 and became the US agent for Schiaparelli in the mid-20th century. They were known for geometric and abstract organic shapes such as flowers and these earrings are a fine example of their design. 

They are signed "LISNER" at the back and measure 2cm tall and 2cm wide.