Our 14k Gold Filled Stacking Rings are all individually hand crafted, sized, & hammered so each band has its own unique story. Since they are 14k Gold Filled, and not Gold Plated, there rings will not turn black and loose their color. You can wear one ring on its own, or you can stack these together or with a variety of other rings. Each band is just over 1mm thick. These rings are custom made to order to half-sizes from 4 to 8.5. Please specify your size in the comments box when ordering and allow up to 3 weeks for them to be made and shipped.