EXCLUSIVE! Some say the colorful, variegated rainbow calsilica was discovered in a mine in Chihuahua, Mexico. Others say it was manufactured. Real or not, it's a beautiful stone. Paired with small lapis cabochons in distinctive sterling silver settings, it will draw admiring glances. ¾" wide earrings hang 15/8". ½" at widest point, it tapers to 1/8".