Millions of years ago, volcanic eruptions and hot springs in Central Oregon created a canyon which harbored a Polka Dot agate. Mineral-rich fluids passed through this terrain and formed these agates, trapping beautiful mineral structures inside. Own a unique piece of nature - no two Polka Dot Agates are alike! You can take this amazing stone home now - just click "Add to Cart". Don't miss out - our gallery is open 7 days a week, and what's available today could be gone tomorrow. Grab your Polka Dot Agate before it's gone!