TY - BOOK AU - Oldershaw,Cally ED - Credo Reference (Firm) TI - Philip's guide to gems AV - QE392 .O43 2003 U1 - 553.8 22 PY - 2003/// CY - London [Eng.] PB - Philip's KW - Crystals KW - Identification KW - Precious stones N1 - Introduction -- Gem formation -- Mining -- Crystal structure -- Optical properties -- Physical properties -- Fashioning and cutting -- Imitation and synthetic stones -- Enhancement -- History of gems -- Famous diamonds -- Gemlore & Birthstones -- Colour -- Classification -- GEMS -- Maps of gem locations -- Glossary -- Useful addresses and acknowledgements; Access restricted to authorized users and institutions N2 - A fascinating, richly illustrated guide to the identification and use of gemstones. The introduction describes the geology, chemistry and properties of gems in clear and accessible terms. The main section supplies complete descriptions of a wide range of gems UR - https://ezp.idm.oclc.org/login?url=https://search.credoreference.com/content/title/philipsgems?institutionId=5224 ER -