Z Tech Advanced Technologies diamond impregnated polishing wheel. Developed in order to polish hard and difficult to cut stone. No diamond powder charging required. Produces mirror finish polish. Made in Germany. Two types available: 1200 carats x 2.5mm x 35mm. 1500 carats x 3.0mm x 35mm.
Excavated ore is transported to a processing plant. The kimberlite is first crushed and then processed through the plant, which consists of a series of screens, jigs and scrubbers and a gravity pan or DMS plant to remove lighter particles and create a concentrate of heavy material, which includes the diamonds. Diamonds are then extracted from this material by using an X ray machine and/or grease table and checked by hand sorting.
Last year, De Beers and GIA came up with new diamond detection machines. GIAs DiamondCheck is priced at USD 23,900. De Beers supplies Diamond Sure , DiamondView and Automated Melee Screening devices.
Diamond cutting machines drive revolution in jewellery business . The processing times were obviously very long. At a certain point, the need for processing pieces that would be difficult to do by hand grew and, thus, the use of machines was introduced.