These rings are from the new men’s Ziro collection.
The pieces in the range are made from the zirconium-containing mineral, zircon. When Zirconium is exposed to a high temperature, a chemical reaction occurs on its surface that results in a black oxidized coating.
The black zirconium band can be overlaid on a sterling silver, 9 or 18-carat yellow, white or rose gold or titanium base. Various styles are available.