This london blue topaz is unbelievable. The cobalt color, the petite size, its faceted shape to catch light. This is made with Sterling Silver, or 14K Gold Fill findings, so they do not tarnish or rub off with wear, just need a little cleaning here and there. 14K Gold Fill is the THICKEST coating of gold before solid gold. It is high quality and does not tarnish with wear. The length is 16" which falls to the collarbone on most. Each necklace comes pre-packaged on a branded earring card for easy display.