The cobalt blue glass measures 13mm with 5mm at its thickest part. It is 16k gold plated. The mushroom coral is 16k gold plated and measures 17mm in diameter. The posts are sterling silver.The length of the earrings is approximately 31mm. These earrings are so simple and classy. They can be worn for a variety of occasions - wedding, evening events, work, or simply everyday!