Cartier Phaan Ruby Ring High Jewelry Design
The Cartier Phaan Ruby Ring from the 2021 High Jewelry Collection Sixième Sens is renowned for its distinctive multi-layer gem-setting concept. The piece showcases an innovative structure that creates a visual depth far beyond traditional ruby rings. As one of Cartier’s boldest designs, the Cartier Phaan Ruby Ring pushes the boundaries of optical illusion in high jewelry craftsmanship.
At the center of the Cartier Phaan Ruby Ring is an 8.20ct cushion-cut ruby with vivid saturation and a refined silhouette. Hidden beneath the ruby is a 4.01ct rose-cut diamond supported by four discreet prongs. This diamond remains completely invisible from the front, yet its soft luminosity radiates through the ruby, enhancing its brilliance with an internal glow.
The layered structure allows light to travel through both stones, creating shifting tones on the surface. The ruby’s outer edges reveal an intense natural red, while the central area exhibits a brighter, more transparent highlight shaped by the rose-cut diamond. The overlapping facets generate geometric reflections that shift as the ring moves, giving the Cartier Phaan Ruby Ring a dynamic sense of depth.
Encircling the ruby are 12 triangular-cut diamonds arranged to echo the sharp geometry of the hidden rose-cut diamond. The sides of the ring incorporate 10 ruby beads in varied proportions, reinforcing the piece’s bold color language and adding greater sculptural volume. This architectural composition helps distinguish the Cartier Phaan Ruby Ring as a signature example of modern high jewelry engineering.
For further insights into ruby quality and gemstone standards, refer to the Gemological Institute of America’s educational resources at GIA.


















