Nyx is made of brass and are gold plated. They are nickel free because of the alloy
Nyx is the Greek godessor (personification) of the night . A shadowy figure, Nyx stood at or near the beginning of creation and mothered other personified deities such as Hypnos (Sleep) and Thanatos (Death), with Erebus (Darkness). Her appearances are sparse in surviving mythology, but reveal her as a figure of such exceptional power and beauty that she is feared by Zeus himself.
CARING & CLEANING
This piece should be stored in a cool, dry place and cleaned carefully with a soft non-abrasive cloth to maintain shine.