An emerald-cut spinel is flanked by two rubies in this engagement ring by K. Brunini, proving that semi-precious gemstones are every bit as enthralling as their precious counterparts. The ring incorporates the California-based designer’s signature "vertebrae" motif, inspired by the sinuousness of the snake and the core energy of the human body. Constantly breaking the boundaries of traditional jewellery design, Katey Brunini contrasts precious materials with an organic rawness that combines the tender and brutal extremes found in nature. As Katey herself says: “Coloured gemstones capture the essence of being alive. The tones of blood coursing through our veins, bright sunlight, the depth of the ocean, or verdant green found in a forest Primeval. Mother Nature shares her purest gifts in coloured stones, she reminds of her magic, her whimsy and her delight.” Her coloured gemstone engagement rings are bold, beautiful and fascinating, making them the perfect choice for the offbeat bride-to-be.