Richard W. Hughes

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1	126 Book Reviews Terra Spinel Terra Firma Add to Reading List Source URL: www.gem.org.au Language: English - Date: 2012-08-29 04:20:59 Natural resources Chrysoberyl Garnet Jewellery Opal Andalusite Kyanite Richard W. Hughes Inclusion Gemstones Crystallography Chemistry
2	Weekly Report Add to Reading List Source URL: www.sapphminco.com Language: English - Date: 2012-02-29 02:28:00 Chemistry Matter Crystallography Optical materials Transparent materials Richard W. Hughes Sapphire Richard T. Liddicoat Ruby Gemstones Oxide minerals Superhard materials