The Month Belongs to the Opal

With autumn now properly here, October hands the jewelry case to the opal, the stone assigned to this month as its birthstone. Its pull is color: a single opal can throw off flashes of several hues at once and shift them as the wearer moves. From New York to Aspen, where the light is turning and the season is changing, it is the stone collectors will be reaching for over the coming weeks.

With reporting from Galerie.