Yogo sapphire

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1	For Immediate Release CONTACT: Paula Crevoshay Add to Reading List Source URL: www.libertinejewelry.com Language: English - Date: 2013-06-19 03:12:43 Optical materials Oxide minerals Superhard materials Transparent materials Optics Sapphire National Museum of Natural History Yogo sapphire Gemology Gemstones Chemistry Matter
2	PDF Document Add to Reading List Source URL: pubs.usgs.gov Language: English - Date: 2011-06-30 09:10:02 Manufacturing Superhard materials Gemstones Abrasives Transparent materials Yogo sapphire Sapphire Corundum Pegmatite Chemistry Oxide minerals Matter