Hexpo 
        by Tom Herbst
      I designed Hexpo to get the most out of a beautiful, large, hexagonal 
        nodule of pink tourmaline. The design worked out amazingly well - this 
        is perhaps the most visually interesting of the 50 or so stones I have 
        cut. 
      The name comes from hexagon + expo, since the crown pattern reminds me 
        of the Expo '67 logo used to celebrate Canada's centenary in 1967 (yes, 
        I am that old). 
      Hexpo is a straightforward design, and is appropriate to all skill levels. 
        BOG-optimized for ISO (84%) and tilt. 
      At right is a N mm, M ct Hexpo cut in flawless Nigerian tourmaline. 
        
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