he 18K Luna Ring channels the luminous energy of the moon for you to wear. It features a golden crescent and blue sapphire stars and an alternating satin and polish finish. Bring the magic of a moonlit night wherever you go with the 18K Luna Ring. 18k Yellow Gold with 0.075ct Diamonds measuring Top Length: 14.95mm/0.58"; Width: 12.85mm/0.5”. Size 5.75