18-karat gold and .925 sterling silver Signature brown diamond on inside of piece to empower women to discover their inner strength power and beauty = approximately 0.02 ct. tw Faceted blue and created white sapphire gemstones = approximately 2.05 ct. tw. Earrings drop approximately 12mm It is customary to treat most gemstones to achieve enhanced color and durability. Some of these treatments may not be permanent and may require special care.