Goldtone, or “Orotone”, was a process of producing photographic images on glass with a gold metallic backing, and was pioneered by Edward S. Curtis 100 years ago. It was his most favored way of producing his photographic images. Curtis wrote: "The ordinary photographic print, however good, lacks depth and translucency. We all know how beautiful are the stones and pebbles in the limpid brook of the forest, yet when we take the same iridescent pebbles from the water and dry them they are dull and lifeless; so it is with the orthodox photographic print, but in the Goldtones all the translucency is retained and they are as full of life and sparkle as an opal."