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2. List of U.S. state minerals, rocks, stones and gemstones

   en.wikipedia.org/wiki/List_of_U.S._state...

   A 2010 effort led by State Senator Gloria J. Romero, a Democrat from Los Angeles, sought to remove serpentine from its perch as the state's official stone. Organizations such as the Asbestos Disease Awareness Organization have supported the move as the olive green rock is a source of chrysotile , a form of asbestos that can cause mesothelioma ...

3. List of gemstones by species - Wikipedia

   en.wikipedia.org/wiki/List_of_gemstones_by_species

   Eilat stone; Epidosite; Glimmerite; Goldstone (glittering glass) Hawk's eye; Helenite (artificial glass made from volcanic ash) Iddingsite; Kimberlite; Lamproite; Lapis lazuli; Libyan desert glass; Llanite; Maw sit sit; Moldavite; Obsidian; Apache tears; Pallasite; Peridotite (also known as olivinite) Siilinjärvi carbonatite; Soapstone (also ...

4. Flexible stone veneer - Wikipedia

   en.wikipedia.org/wiki/Flexible_stone_veneer

   Flexible stone veneer is made from a thin layer of stone stripped or peeled from a metamorphic stone marble chips or slab, rather than cutting from a solid stone or precast composite material. Thin veneers (from .5mm to 2mm thick) of slate, schist, or sandstone ( metamorphic rocks ) are pulled away from the original thicker stone slabs by ...

5. Jet (gemstone) - Wikipedia

   en.wikipedia.org/wiki/Jet_(gemstone)

   Jet is a type of lignite, [1] the lowest rank of coal, and is a gemstone.Unlike many gemstones, jet is not a mineral, but is rather a mineraloid. [2] It is derived from wood that has changed under extreme pressure.

6. Rock veneer - Wikipedia

   en.wikipedia.org/wiki/Rock_veneer

   Root throw is the process that occurs when a tree topples, raising its rootwad and the rock fragments in it. Fine sediment falls back into the rootwad pit or travels downstream, but coarse sediments form a local rock veneer around the rootwad. This local rock veneer is larger than the pit of the rootwad, as falling clasts extend the area of veneer.

7. Masonry veneer - Wikipedia

   en.wikipedia.org/wiki/Masonry_veneer

   The weight of a veneer wall can be significantly less than solid masonry, resulting in economies in foundations and structural support. Because they are a lighter-weight, more economical option, brick and stone masonry veneers can be used in place of natural stone or full brick to provide added aesthetic appeal to a structure. [citation needed]