Pink light, held in gold claws.
Each pear cut opal tone stone hangs from a small gold hoop that clicks shut, and because the claws leave the back open, restaurant lighting comes through the stone and turns it a milky lilac instead of a hard white flash. With your hair up they do the work a necklace usually does. With it down they show when you turn to answer someone.
Save them for the anniversary dinner, then notice you are wearing them to Sunday brunch too.