Sky Olivia Button Riviere NecklaceLarkspur & Hawk Olivia button riviere of black rhodium washed sterling silver, white quartz with sky foil. The rivire, a continuous river of stones that flows around ones neck, and a staple of Georgian jewelry, has become one of Larkspur & Hawks signatures, which all began with the Olivia Button Rivire. A silhouette that continues to be one of our most popular styles, it can be worn layered, alone, back to front or as a choker by hooking the clasp