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? What materials are Arc Lite made from? Is Arc Lite's stone removeable? Is Arc Lite a replacement for Roccbox or Tread?