Marty, they're called lapidary saws...diamond blade, and use water as a lubricant. I think you still have to polish them to get the shiny look. Not sure where you would find one, maybe a rockhound catalog or some place that sells jewelry making stuff.
Greg
PS...a tile saw might be a cheap alternative for smaller specimens. Home Depot sells one made by Wen that isn't too expensive.[ 09-04-2001: Message edited by: greg ]
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Steelhead are where you find them!