This 18K two-tone box chain necklace measures 16.5 inches long and 1.5mm wide, alternating between white and yellow gold links. The box chain style creates a smooth, square profile that catches light from multiple angles as it moves.

At 16.5 inches, the chain sits at the collarbone for most wearers, and the 1.5mm width gives it presence without feeling heavy or bulky around the neck. The two-tone pattern means it pairs with both white and yellow gold jewelry, and the alternating colors create dimension along the entire length.

The box chain design lays flat and smooth against the skin, and it works well on its own or layered with other chains of different lengths.