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Originating from Namibia and China, where it is mined for use as a decorative stone due to its chaotic chatoyancy and brecciated structure. Ranging in colour from brownish-red, to blue-grey, and chatoyant yellow. The Chinese variety are predominantly a reddish-brown, with regions of chatoyant blue and yellow.
In gemology, chatoyancy (/ ʃ ə ˈ t ɔɪ. ən s i / shə-TOY-ən-see), also called chatoyance or the cat's eye effect, [1] is an optical reflectance effect seen in certain gemstones, woods, and carbon fiber. Coined from the French œil de chat, meaning 'cat's eye'. The chatoyant effect is typically characterized by one or more well-defined ...
The Cerutti Mastodon site is a paleontological and possible archeological site in San Diego County, California. In 2017, broken mastodon bones at the site were dated to around 130,700 years ago. The bones were found with cobblestones displaying use-wear and impact marks among the otherwise fine-grain sands.
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.
Number of employees. 4,200 [2] ... and is the parent corporation of Granite Construction Company. ... and crushed stone products. The company was under investigation ...
Asterism on the surface of a blue star sapphire. A purple-pink star sapphire displaying asterism in a platinum ring.. An asterism (from Ancient Greek ἀστήρ (astḗr) 'star' and -ism) is a star-shaped concentration of light reflected or refracted from a gemstone.
SDHL # [1] Landmark name [2] Image Address [2] Designation Date [2] Description [3]; 1: El Prado Area: Balboa Park: 9/7/1967 Long, wide promenade running through the center of Balboa Park, lined with Spanish Revival buildings including the Museum of Us, the San Diego Museum of Art, the Museum of Photographic Arts, the Natural History Museum, the Fleet Science Center, and the Timken Museum of Art
San Diego County Archaeological Society Research Paper No. 1. ... "The Stone Art of the San Dieguito Plateau". American Anthropologist 31:454-467. Rogers, Malcolm J ...
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1065 W. Morena Blvd., San Diego, CA · Directions · (619) 276-3915