"All options other than copper are in bezel setting and will not tarnish or turn your skin colors. WHAT IS GOLD FILL? It's an actual layer of gold-pressure bonded to another metal. Gold filled is not to be confused with gold plating as filled literally has 100% more gold than gold plating. Gold filled is much more valuable and tarnish resistant. It is also safe for those with sensitive skin to wear. It can last for decades even with daily wear and does not cause skin discoloring. The sapphire is Unique Adjustable Raw Stone Jewelry, Dainty Adjustable Hand Forged Stackable Rings, Bohemian Rings With Raw Stone For Healing, Dainty Hand Forged Adjustable Stackable Rings, Dainty Hand Forged Rose Gold Jewelry, Bohemian Raw Stone Rings For Healing, Bohemian Raw Stone Healing Rings, Spiritual Style Copper Jewelry With Raw Stone, Bohemian Stackable Ring