Shop Banana Republic's Rondelle Trio Earrings &#124 Aureus + Argent: ECLECTIC STONE COLLECTION: The earth is full of fascinating treasures in the form of minerals and stones. From quartz to pyrite, this collection favors unique jewelry settings that highlight all the best qualities of some of our favorite semi-precious gems., Simply elegant, these multi-faceted rondelle-shaped semi-precious beads of black spinel are threaded onto gracefully-shaped earwires elongated to keep the earring…