It's the opening weekend for the Tucson Gem, Mineral, Fossil Showcase. A world renowned gem cutter receives an award for excellence in gem cutting.

Profiles the extraordinary life and work of Ben Kho, from a young entrepreneur in Cambodia to an award-winning gem cutter.

But the chance to watch as a master diamond cutter transforms, facet by facet, a large diamond in the rough into a glistening gem? Priceless.

Name: Michael Guastadisegni Background: Guastadisegni, 42, was 14 years old when his family moved from Italy to Chicago. He studied mechanical engineering at the University of Illinois at Urbana-Ch… ...

Trichy, once regarded as the capital of artificial gem cutting, an industry which manually made diamond lookalike stones, had lost its market to the aggressive pricing and machinery expertise of ...

Rubies, emeralds and tourmalines can only sparkle with the right cut. Since early this year, a fully automatic machine has undertaken this grinding process one gem cutter. It saves up to 30 ...

Automatic Gem Cutter: Fire Up the Ruby Bot Photo: Corbis Getting a perfect diamond or ruby from a raw stone has always been more art than science. Each gem must be meticulously cut and polished by ...

Local gem store owner Tobin Rupert realized he had a valuable stone when his associate Tyler Jourdonnais dropped off a ruby to be cut. "I thought it was going to be at least 30 grand," he said. As he ...

Trichy, once regarded as the capital of artificial gem cutting, an industry which manually made diamond lookalike stones, had lost its market to the aggressive pricing and machinery expertise of ...

But the chance to watch as a master diamond cutter transforms, facet by facet, a large diamond in the rough into a glistening gem? Priceless.