Royal Blue Unheated Sapphire Stone RingA cushion cut royal blue sapphire sits at the heart of this design, giving the ring a rich sense of depth and individuality. Its unheated nature adds to the rarity of the piece, while the softened square shape creates a center that feels both strong and romantic. Around the sapphire, pear, round brilliant, and marquise diamonds form an asymmetrical floral composition. The diamond petals appear to open around the center stone, while the split shank