Earrings and Necklaces PI Crop Circle Pendant - Solid Pewter Pewter Necklace - PI Crop Circle Pendant - Solid Pewter. The chain is stainless steel and 24 inches long. Pendant 3/4" across Amazing finishing touch for any Steampunk costume, Victorian Steam Era costume or Modern impression for mechananical era Great for Crop Circle and Alien enthusiasts, Conspiracy Theorists and Alien believers