These fun and flirty earrings will charm everyone with their whimsical beauty. The sterling silver (.925) lever back hoop settings are adorned with teardrop-shaped pink bamboo coral. Along with shells and animal teeth, coral was among the earliest material used by our ancestors in the making of jewelry. Scientists have only been able to make preliminary estimates of the age and growth rate of deep water coral; some specimens have been discovered that are 4,000 years old. Findings: Sterling Silver (.925) Pink Bamboo Coral Shouldn't your jewelry tell a story as fascinating as your own?