William Holland Lapidary School - July 2007 Show & Tell << Previous   Next >> Opal Class William Holland Lapidary School - Topics of Interest Show & Tell << Previous Introduction Next >> Opal Class Accommodations ClassRooms Show & Tell Auction Night Opal Class Gem ID Class Gem Identification Tools Gemology Tools Professional Software Faceting Rough 3.34ct Paraiba Tourmaline - Hand Select Gem Rough Gem Scales & Filters PR Digital Carat Scale 100ct x .01ct Click any text above for more information