Eduardo Herrera Oxidized Silver and Tumbaga Necklace

This extraordinary necklace was made by Mexican architect turned jeweler, Eduardo Herrera. It is made of oxidized 950 silver (higher quality than sterling) and tumbaga. Tumbaga is a pre-Colombian technique used in Mesoamerica and South America to create an alloy of gold with copper.
The combination of tumbaga with the blackened silver could not be more striking. Herrera's architectural background is evident in the construction of this necklace with elaborately overlapping graduated size links. The back is as beautiful as the front.
It measures 1 1/2" at its widest and approximately 18" in length. The curvature of the necklace makes it difficult to measure precisely.