This sterling silver bypass ring features a bar set with Nanogems that depict a colorful rainbow on each end. The bypass design creates a wrapped look and allows for small sizing adjustments. Nanogems are man-made, glass-ceramic material containing nano-sized crystals of spinel within its matrix. These stones have exceptional physical and optical properties with a more uniform color than CZs, synthetic quartz or synthetic corundum, and a hardness, reflective index and luster that is very close to natural gemstones.