Section 13 Articles of stone, plaster,cement,asbestos, mica or similar materials; ceramic products; glass and glassware 68 Articles of stone, plaster, cement, asbestos, mica or similar materials 68 15 Articles of stone or of other mineral substances (including carbon fibres, articles of carbon fibres and articles of peat), not elsewhere specified or included Commodity Code Description 68 15 10 Nonelectrical articles of graphite or other carbon 68 15 20 Articles of peat 68 15 91 Containing magnesite, dolomite or chromite 68 15 99 Other