This is a beautiful sculpture made by pouring heated bismuth metal into a molds and oxidizing with differant heat settings to get the colors vibrant. Bismuth is more valuable than silver and these are all old stock collection and unique. Display in your home with minimal touching for best care. The oils on our hands can change the color over time just like with sculptures you see in the world. I'm an authorized reseller for The Bismuth Smith who is the artist.