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191. The Weinman Mineral Gallery: The museum features four main galleries: The Weinman Mineral Gallery, The Fossil Gallery, Science in Motion and The Collins Family My Big Backyard. A 120-seat digital planetarium and an observatory with a state-of-the-art 20-inch telescope will also be lo; HTML, 63 Kb, 2009-03-30 11:53:52; /directory/museums/the-weinman-mineral-gallery-wdd-003-00039.html
192. GemResearch Swisslab: Private gemological research company focused on the characterization of high-quality gems from newly opened mines.; HTML, 65 Kb, 2009-03-15 03:01:18; /directory/laboratories/gemresearch-swisslab-wdd-003-00016.html
193. How can I add my gemstone? at Alexandrite discussion forums | Alexandrite guide: How can I add my gemstone? at Alexandrite discussion forums | Alexandrite guide; HTML, 25 Kb, 2006-08-29 20:23:00; /discussion/topic/how-can-i-add-my-gemstone-FRM-156
194. What is the difference between chrysoberyl and alexandrite? at Alexandrite discussion forums | Alexandrite guide: What is the difference between chrysoberyl and alexandrite? at Alexandrite discussion forums | Alexandrite guide; HTML, 25 Kb, 2009-03-19 22:15:42; /discussion/topic/what-is-the-difference-between-chrysoberyl-and-ale-FRM-302
195. Alexandrite of Brésilia at Alexandrite discussion forums | Alexandrite guide: Alexandrite of Brésilia at Alexandrite discussion forums | Alexandrite guide; HTML, 25 Kb, 2011-01-17 20:25:00; /discussion/post/alexandrite-of-brjsilia-FRM-414-00001
196. Clarity grading: The classification of fashioned gemstones or diamonds according to their clarity using the standard nomenclature of terms: flawless, pure, clean, perfect (for top grade). VVS (very very slightly included), VS (very slightly included), SI (slightly include; HTML, 24 Kb, 2008-07-20 13:03:38; /chapters/glossary/clarity-grading.html
197. Re: Browse gemstones tagged with color change gemstone at Alexandrite discussion forums | Alexandrite guide: Re: Browse gemstones tagged with color change gemstone at Alexandrite discussion forums | Alexandrite guide; HTML, 25 Kb, 2010-01-30 00:24:06; /discussion/post/re-browse-gemstones-tagged-with-color-change-gemstone-FRM-355-00001
198. Vanadium: A very hard, light-gray, ductile, malleable, metallic element of the group V of the Periodic System with the symbol V. It is one of the 8 pigment metals responsible for color in gemstones such as beryl, sapphire (natural or synthetic). Used as a component; HTML, 24 Kb, 2008-07-20 13:07:28; /chapters/glossary/vanadium.html
199. Alexandrite Gemstone Collectors Guide, Alexandrite gemstones gallery and Alexandrite mining information at Alexandrite discussion forums | Alexandrite guide: Alexandrite Gemstone Collectors Guide, Alexandrite gemstones gallery and Alexandrite mining information at Alexandrite discussion forums | Alexandrite guide; HTML, 25 Kb, 2007-01-18 07:20:33; /discussion/topic/alexandrite-gemstone-collectors-guide-alexandrite--FRM-158
200. Re: Are there any other gemstones which change color? at Alexandrite discussion forums | Alexandrite guide: Re: Are there any other gemstones which change color? at Alexandrite discussion forums | Alexandrite guide; HTML, 25 Kb, 2007-06-11 02:03:00; /discussion/post/re-are-there-any-other-gemstones-which-change-color-FRM-282-00001

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