This came out really nicely in stainless steel with "antique bronze glossy" finish. It's a steampunk style pendant, hence the cog teeth. I was worried that the inner teeth might fuse together since the minimum gap is only a millimeter, but it seems to have come out fine!
Here is a slightly smaller version in silver. It's almost too shiny! They left a casting sprue on which I'll have to file off, but I have mostly hidden it in the photos. I might try polishing it as well.