Section V — Mineral products
Heading
2506
Quartz (other than natural sands); quartzite, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape.
Common commodities
Crude quartz lumpsRoughly squared quartziteSawn slabs of quartziteMetamorphic rock blocksQuartz in a rectangular shapeRaw silica stonesSawn quartzite blocksDimension stone quartziteLump quartziteQuartzite sawn slabs