A diamond-embedded lapidary polishing wheel allows gem cutter Bob Hancock to carve into rough bits of quartz and transform them into sparkling gems. Even with this super-hard polishing surface — and ...
Jean-Noel Soni, who specializes in colored stones, said he tries to give each one a shape that “maintains the crystal’s integrity.” By Tanya Dukes When Lauren Schmeer, a strategy consultant in New ...
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