Incorporating the raw nugget setting with a smooth and shapely elliptical opal lends balance to this Mid Century Brutalist ring. The intriguing boulder opal displays the natural matrix with a streak of kaleidoscopic flashes of color running down the center of the gemstone. Uniquely crafted of 14 karat yellow gold, this vintage cocktail ring from the 1960s makes a bold statement. Acquired from a San Luis Obispo, California estate jewelry appraisal among a 500 piece collection recently purchased by our experts.