Richard Mille is taking its high-jewelry watches up a notch.

The Swiss maison just unveiled an uber-limited collection of 12 dazzling timepieces that double as fine jewelry on the wrist. The lineup, known as the RM HJ-02 In-House Automatic Tourbillon, comes in four colorways: blue, pink, violet, and green, each designed to show off bold hues and to play with light.

In the new collection, Richard Mille’s classic tonneau-shaped case has been transformed into an explosion of color, thanks to the 1,399 precious and ornamental stones that adorned each watch. The brand’s in-house gem setting team used snow, grain, and bezel-setting techniques to play with opacity and reflection on the wrist; in total, the pros devoted nearly 700 hours throughout the painstaking process of prepping and placing all those stones. All their hard work shows in that Art Deco-inspired case (which took over a year to develop), where layered planes and asymmetrical details shine from every angle.

A look at the caseback.

Richard Mille, as we mentioned, made sure to have plenty of bold colorways to pick from, too. Kicking things off is Violet Variations, where you’ll find plenty of purple-hued gems paired alongside bold green stones. Pink Pursuit, meanwhile, offers up a slightly brighter colorway, with pinks, greens, and dashes of light blue. Speaking of, Blue Ballet is home to shades of blue, too, as well as some pink and orange tones. Last but not least is Green Gambit, where green and blue gems take center stage. Each timepiece also comes with a matching strap—and the gems even extend to the buckle.