How thick is Arc Lite's Cordierite stone? 13 February 2026 15:07 The Arc Lite stone is 12mm/0.5" thick. Related articles How long does Arc Lite take to heat up? How is Arc Lite different than Arc or Arc XL? Is Arc Lite's stone removeable? What materials are Arc Lite made from? Is Arc Lite a replacement for Roccbox or Tread?