Gems, jewelers' materials, and ornamental stones of California

Gems, jewelers' materials, and ornamental stones of California

Author: Kunz, George Frederick, 1856-1932

Year: 1905

California. State mining bureau. Bulletin ; no. 37. San Francisco, June, 1905. "A systematic description of the gemstones & ornamental materials, with properties, chemical composition, varieties, uses, and where found. The introductory matter discusses the state gemstones generally, and furnishes some information on state geology, the history of gem mining in California, and acknowledges assistance. The section on gem mines is largely a detailed description of the pegmatite deposits of Riverside & San Diego counties, and is particularly valuable because it is firsthand information, based on visits made by Kunz and with photographs that probably were taken by him or under his direction. The historical facts are particularly valuable and form much of the basic reference material upon which other authors elaborated in their writings on these mines."--Gemology, by J. Sinkankas, entry no. 3679. Partial contents: Diamond -- Corundum -- Topaz -- Spinel -- Beryl -- Garnet -- Tourmaline -- Quartz -- Chalcedony -- Chrysoprase -- Jasper -- Opal -- Albite -- Orthoclase -- Graphic granite -- Labradorite -- Diopside -- Enstatite -- Kunzite - spodumene -- Vesuvianite (Californite) -- Pectolite --