1-10 Mohs scale Hardness Collection 10pcs

Rock Size:3*4cm Two Boxes Wooden Box Size:400*230*35mm Limonite/ Lead-zinc Ore/ Bauxite/ Navajoite/ Titanic Iron Ore/ Delafossite/ Cassiterite/ Magnetite/ Hematite/ Graphite/ Quartz/ Wollastonite/ Diopside/ Montmorillonite/ Talc/ Serpentine/ Kaolinite/ Zeolite/ Plagioclase/ Calcite/ Dolomite/ Barite/ Gypsum/ Apatite/ Granite/ Basalt/Andesite/ Diabase/ Synite/ Limestone/ Sandstone/ Shale/ Conglomerate/ Breccia Marble/ Quartzite/ Leptite Schist/ Gneiss

Rock Size:4*3cm Wooden Box Size:400*230*35mm Olivine Basalt, Dolerite, Basalt Glass, Java Volcano, Black Pumice, White Pumice, Red Pumice, Vesicular basalt, Dacite, Moyite, Plagiogranite, Tuff Lava, Perlite, Furvous Andesite

Refined petroleum products are derived from crude oils through processes such as catalytic cracking and fractional distillation. Gasoline / Kerosene / Lubricant / Asphalt / Aviation Oil / Diesel / Paraffin