Emerald beads stacked with 22k decorative beads and Green Chrysoprase hang from solid 18k half hoops. Precious Emerald is rarely flawless. These Precious beads are not treated. 90% of Emerald is treated.Most emeralds have not only numerous internal inclusions and fractures but also tiny surface breaking fissures or cracks. For this reason, the vast majority of emeralds are treated to improve their clarity. ... The traditional treatment for emerald is oiling with cedar oil.