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2. Sarine (company) - Wikipedia

   en.wikipedia.org/wiki/Sarine_(company)

   Sarin Technologies was established in 1988. [9] On January 21, 2014, the name was officially changed to Sarine Technologies. [10]The company's first product was the Robogem, an automated device for gemstone processing, as part of an initiative promoted by the Israel Emerald Cutters Association.

3. Lapidary - Wikipedia

   en.wikipedia.org/wiki/Lapidary

   Removing cut stone and placing it in lapidary stick. A gemcutter then selects the shaping wheel and applies abrasive compound. They hold a lapidary stick against the revolving shaping wheel and lapidary disk to further shape stone and grind facets. Depositing stone within a barrel with both water and a grinding/polishing medium and either ...

4. Diamond tool - Wikipedia

   en.wikipedia.org/wiki/Diamond_tool

   The cutting edge of most diamond tools is sharp to tens of nanometers, making it very effective for cutting non-ferrous materials with high resolution. SPDT is a very accurate machining process, used to create finished aspherical and irregular optics without the need for further polishing after completion.

5. Breton (company) - Wikipedia

   en.wikipedia.org/wiki/Breton_(company)

   Breton S.p.A. is an Italian, privately held company established in 1963 [1] that produces machines and plants for engineered stone [2] and metalworking.Machines and plants by Breton can be used in diverse sectors such as die-making, aerospace, automotive, racing cars, energy, gears, general mechanics, stone processing and kitchen top manufacturing.

6. Diamond cutting - Wikipedia

   en.wikipedia.org/wiki/Diamond_cutting

   Oddly shaped crystals, such as macles are more likely to be cut in a fancy cut—that is, a cut other than the round brilliant—which the particular crystal shape lends itself to. Even with modern techniques, the cutting and polishing of a diamond crystal always results in a dramatic loss of weight, about 50%. [7]

7. Gemstone - Wikipedia

   en.wikipedia.org/wiki/Gemstone

   The facets must be cut at the proper angles, which varies depending on the optical properties of the gem. If the angles are too steep or too shallow, the light will pass through and not be reflected back toward the viewer. The faceting machine is used to hold the stone onto a flat lap for cutting and polishing the flat facets. [36]