Girdling: The rough is placed in a chuck on a lathe. While the rough stone rotates on the lathe, a second diamond mounted on a dop is pressed against it, rounding the rough diamond into a conical shape.
Girdling - The step in the fashioning process of a diamond in which the stone is given a circular shape.
Girdling
Girdling is the process of giving a circular shape to a gemstone. In this process, a gemstone is held in a lathe, or in a cutting machine, and cut or shaped by another diamond or tool, called a sharp.
Gold ...
girdling machine Today's girdling machine is driven by an electric motor. It is similar to a lathe for the purposes of rounding the elliptically shaped diamonds. The two major types used today are the single and double spindle machines.
Cutting or girdling. Process involves grinding one diamond against another to give it its basic shape.
Carat weight ...
Power driven bruting (girdling) machine for cutting diamonds patented in England
First commercial opal mine opened in Australia
1892
Vogue magazine founded in the USA
Marcus & Co. formerly Jaques & Marcus, established in New York ...
The process of rounding a diamond to form its girdle, customarily done by grinding one diamond against another on a rotating wheel. Some American retailers call this girdling. It may also be called rounding.
Burn, Burnt, Burned ...
 See also: Mount, Stone, Brilliant cut, Brilliant, Polish
  
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