Kendra Scott Rae Gold Pendant Necklace in Slate Cat's EyeSlate Cat's Eye glass contains optical fibers that allow the stone to change hues as it captures light! The term cat's eye describes the process conducted during the creation of the stone! Before the glass cools, thin transparent fibers are strung through the glass to create a reflective look, then if you set it in a gold setting and add a gold chain it will add some glamour and class to any outfit! We know you will love the Rae Gold Pendant Necklace!