Royal blue or Cornflower Blue Sapphire | understanding color of Ceylon sapphire

Cornflower blue sapphire is the most sought after and highly precious color variety of Blue Sapphire stone. This gemstone is characterised by its vivid, pure blue hue (closely resembling cornflower color) that is usually found in medium to light tone.
The cornflower blue sapphire, with its luminous pure blue gleam, has always been one of the most valuable and coveted gemstones.
The most valuable attribute of Sapphire is the cornflower blue color, known as Kashmir Sapphire or Cornflower Blue Sapphire. Another valuable Sapphire type is the very scarce, orange-pink Padparadscha.