A silver metallic coat hook (like a wooden coat hook, curving down and to the left, but just the hook not the hook stand) at the top. A thin silver string hangs straight down from the hook's tip. At the bottom of the string, a gold metallic ring (like a coin or medallion) with the Greek letter σ (sigma) engraved in the center.

The sigma ring should look like it's dangling. Clean, flat design, no background, high contrast, vector-style, 512×700px