A bi-metallic timepiece accessory, this item combines the visual appeal of two precious metals. It is typically constructed using either plating or layering techniques to achieve the contrasting color effect. Examples range from bands with alternating links of contrasting hues to those with a central section in one color flanked by sections in the other.
The appeal of such a design lies in its versatility and ability to complement a wider range of jewelry and clothing. The dual-tone characteristic allows it to coordinate with both yellow and white metal accessories, providing a more flexible aesthetic. Historically, combining these precious metals in adornment signifies a blend of elegance and status.