Basalt
Basalt slabs are typically smaller in size than other materials such as marble or granite. Basalt is quarried from boulders which are the result of lava flows.
Slate
Granite
“Granite” is certainly the most misused term in the stone business. Typically the name is applied to any stone that is relatively low maintenance. Stones are made up primarily of silicates fall into this category. Silicate and other like minerals are acid resistant and very hard making these materials a great choice for food prep and other surfaces that are subject to a lot of wear and tear. Gneiss and basalt are often misclassified as granite.