This silver plated stainless steel flat top ring makes for a bold statement yet simple enough for stacking. Available in size 7. Modern Everyday Stackable Rings With Open Band, Modern Metal Hypoallergenic Rings, Modern Hypoallergenic Metal Rings, Minimalist Round Stackable Metal Rings, Minimalist Stainless Steel Jewelry For Everyday, Minimalist Metal Stackable Round Rings, Modern Nickel Free Stackable Rings, Modern Nickel-free Open Midi Rings, Hypoallergenic Stainless Steel Open Ring