Cornflower blue sapphire is a specific shade of sapphire that features a vibrant, medium to deep blue color with a slight hint of violet. This particular hue is highly sought after in gemstones because of its rich, yet soft tone, which is both eye-catching and elegant. The term "cornflower blue" comes from the similar color of the cornflower plant's petals. These sapphires are typically associated with high-quality, non-treated gemstones, and they often exhibit a brilliant, slightly velvety luster. Cornflower blue sapphires are considered one of the most desirable colors for sapphires and are often used in fine jewelry, including engagement rings. The color is both timeless and versatile, complementing various settings and designs.