Filigree is a noun that refers to an ornamental wire made of gold or silver. 

The Latin word filum (FEE loom) means ‘thread.’ By the late 17th century, filum had evolved into our word of the day and had come to refer to a form of decoration. Here’s an example of filigree in use:

Stacy always had flamboyant tastes, but the way she decorated her dog’s house with gold filigree was a little excessive.