A piece of copper is soldered onto a sterling silver band and then filed down to a smooth transition between the two metals.
Because the copper is untreated/uncoated it will change colour and appearance with wear depending on your skin chemistry. Some people have little problem with this while others will find that it discolours rapidly. Please consider this before ordering. It can be special ordered in gold which will not discolour--please contact me for pricing.
If the size you need isn't listed in options, or you prefer a 1/4 size, please mention this in the comments section when ordering.