MATERIALS

3. / finely dressed (cut, worked) masonry, either an individual stone that has been worked until squared or the masonry built of such stone.
4. / a pyroclastic material, typically brown, black, or red depending on its chemical content.
6. / a manufactured piece of hard-wearing material such as ceramic, stone, metal, or even glass, generally used for covering roofs, floors, walls, showers, or other objects such as tabletops.
9. / a sedimentary rock composed largely of the minerals calcite and aragonite, which are different crystal forms of calcium carbonate (CaCO3).
10. / a non-foliated metamorphic rock composed of recrystallized carbonate minerals, most commonly calcite or dolomite.
12. / a composite material composed of coarse granular material embedded in a hard matrix of material that fills the space among the aggregate particles and glues them together.

1. / a generic flat stone, usually used for paving slabs or walkways, patios, fences and roofing. It may be used for memorials, headstones, facades and other constructions.
2. / a naturally occurring granular material composed of finely divided rock and mineral particles.
5. / a general term that includes minerals, rocks, soil and water.
7. / a fine-grained, foliated, homogeneous metamorphic rock derived from an original shale-type sedimentary rock composed of clay or volcanic ash through low-grade regional metamorphism.
8. / a type of earthenware, is a clay-based unglazed or glazed ceramic where the fired body is porous.
11. / a naturally occurring solid aggregate of one or more minerals or mineraloids.