4mm Two Tone Polished Tungsten Unisex Rings (3 colors) lunar This one runs cubic zirconia

This one runs cubic zirconia the full circumference — which is what an eternity band actually means

The distinction in that line is the whole point of it — the relationship changes as you both get older

light-weight

This one isn't — 6mm

which is what a stacking ring needs to be

4mm Two Tone Polished Tungsten Unisex Rings (3 colors) lunar This one runs cubic zirconia4mm two tone polished Tungsten unisex rings for men or women with a high polished finish. Light weight and comfort fit crafted design for all day wear. Comes in 3 two tone styles: silver and blue, black and blue or black and gold color. Durable and scratch resistant due to the unique properties of our tungsten rings and can be worn in the shower, rain, swimming and during exercise as won't rust or change color.