Boucheron Quatre Rose&White&Yellow Gold Diamond Bracelet. Model reference: JBT00507M. The Quatre is an iconic collection of Boucheron that represents the unique style and craftsmanship of Boucheron. The sophisticated bracelet of 17.5 cm perfectly combines rose, yellow, and white gold, precious diamonds, and brown PVD. The playful curvaceous and cubic design of the noble metal is amazingly enhanced by the sparkling of light within the facets of the gemstones. The engraving of the brand's name on the inner side of the ring-shaped charm makes a statement of quality and chic French style.