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2. Faceting machine - Wikipedia

   en.wikipedia.org/wiki/Faceting_machine

   First the rough stone is glued to the end of the dop. Once the glue or wax has set, the other end of the dop is inserted into the quill. The index is set to 64, which is the same as 0. The mineral in this example is quartz, so the first angle will be 45 degrees. This is set, and the quill is lowered to make sure it will stop at roughly 45 degrees.

3. Tumble finishing - Wikipedia

   en.wikipedia.org/wiki/Tumble_finishing

   Tumble finishing, also known as tumbling or rumbling, [1] is a technique for smoothing and polishing a rough surface on relatively small parts. In the field of metalworking , a similar process called barreling , or barrel finishing , [ 2 ] works upon the same principles.

4. Diamond cutting - Wikipedia

   en.wikipedia.org/wiki/Diamond_cutting

   Diamond polisher in Amsterdam. Polishing is carried out by forcing a diamond against a spinning disk with abrasive. Diamond polishing is the final polishing of the diamond. In a diamond factory, one would find a diamond crossworker who first places the main facets on a diamond (blocking the diamond). This is done to ensure maximum weight ...

5. Mandrel - Wikipedia

   en.wikipedia.org/wiki/Mandrel

   A mandrel, mandril, or arbor is a tapered tool against which material can be forged, pressed, stretched or shaped (e.g., a ring mandrel - also called a triblet [1] - used by jewellers to increase the diameter of a wedding ring), or a flanged or tapered or threaded bar that grips a workpiece to be machined in a lathe.

6. Cut (gems) - Wikipedia

   en.wikipedia.org/wiki/Cut_(gems)

   Among the several techniques used to work with gemstones are sawing, grinding, sanding, lapping, polishing, grilling, and tumbling. The diamond cut planning stage is a complex process that requires the cutter to work with unique rough stones.

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