Ornamental stones are a Piaget signature, celebrated for their vivid, intense hues and natural sense of mystery and strength. The dial of the new Piaget Polo Perpetual Calendar Obsidian emanates this very emotion and intrigue: the obsidian gemstone has an inherent iridescence thanks to inclusions that formed when drops of mineral-rich sulfide liquid became trapped in the rock as it solidified. Left in the hands of Mother Nature, such inclusions are very rare, and no two stones are alike. Piaget has paired this exceptional obsidian on a white gold case with a perpetual calendar, one of watchmaking’s most historic and emblematic complications, which adds a bold and technical, androgynous feel to the sensual design. Piaget’s love of coloured stones also shines through in a bezel of deep blue sapphires, set in dark claws to further enhance the dial’s magic and individuality. A rare and luxury timepiece, limited to 18 collectable editions, that can be easily changed into a rubber bracelet for the daily life.