William Holland Lapidary School - July 2007 Opal Class << Previous Next >> Introduction William Holland Lapidary School - Topics of Interest Opal Class << Previous Introduction Next >> Introduction Accommodations ClassRooms Show & Tell Auction Night Opal Class Gem ID Class Gem Identification Tools Gemology Tools Professional Software Faceting Rough 590.5ct Synthetic CZ Grayish-Greenish - Hand Select Gem Rough Gem Scales & Filters PR Digital Carat Scale 100ct x .01ct Click any text above for more information
