Barbara Bixby olive quartz ring

Beautiful bold Barbara Bixby cushion cut 7.50ct olive quartz ring with checkerboard facets. The wide graduated band has an 18k yellow gold flower flanking both sides of the stone. Floral and zigzag detailing adorns the band. Hallmarked Bixby 925/18k. Mint condition. Rare. Only worn a few times. From my personal collection.