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2. Engineered stone - Wikipedia

   en.wikipedia.org/wiki/Engineered_stone

   Engineered stone. Engineered stone is a composite material made of crushed stone bound together by an adhesive to create a solid surface. The adhesive is most commonly polymer resin, with some newer versions using cement mix. This category includes engineered quartz (SiO 2), polymer concrete and engineered marble stone. [1]

3. Granite - Wikipedia

   en.wikipedia.org/wiki/Granite

   Granite is a hard stone and requires skill to carve by hand. Until the early 18th century, in the Western world, granite could be carved only by hand tools with generally poor results. A key breakthrough was the invention of steam-powered cutting and dressing tools by Alexander MacDonald of Aberdeen , inspired by seeing ancient Egyptian granite ...

4. List of rock types - Wikipedia

   en.wikipedia.org/wiki/List_of_rock_types

   Claystone – Clastic sedimentary rock composed primarily of clay-sized particles. Coal – Combustible sedimentary rock composed primarily of carbon. Conglomerate – Sedimentary rock composed of smaller rock fragments. Coquina – Sedimentary rock that is composed mostly of fragments of shells.

5. List of largest monoliths - Wikipedia

   en.wikipedia.org/wiki/List_of_largest_monoliths

   Monolith with bull, fox, and crane in low relief at Göbekli Tepe. The density of most stone is between 2 and 3 tons per cubic meter. Basalt weighs about 2.8 to 3.0 tons per cubic meter; granite averages about 2.75 metric tons per cubic meter; limestone, 2.7 metric tons per cubic meter; sandstone or marble, 2.5 tons per cubic meter.

6. Coldspring (company) - Wikipedia

   en.wikipedia.org/wiki/Coldspring_(company)

   Coldspring. Coldspring is a quarrier and fabricator of granite and other natural stone and a bronze manufacturing company in the United States. [1] Coldspring serves the memorials market, the design and architectural market and distributes slabs for the residential market, industrial products, raw quarry blocks, and diamond tools. [2]

7. Porphyry (geology) - Wikipedia

   en.wikipedia.org/wiki/Porphyry_(geology)

   Porphyry (geology) "Imperial Porphyry" from the Red Sea Mountains of Egypt. A waterworn cobble of porphyry. Rhyolite porphyry from Colorado; scale bar in lower left is 1 cm (0.39 in) Porphyry (/ ˈpɔːrfəri / POR-fə-ree) is any of various granites or igneous rocks with coarse-grained crystals such as feldspar or quartz dispersed in a fine ...