Gems are mined from the earth in various methods around the planet. These gems are separated from the unwanted material at the mine. The unrefined gems will be then sorted for size and quality, larger stones will be separated out to be treated specially in efforts to maximise value. Stones that are deemed to be of a high enough quality will go on to the gem smith where they will be cut to size according to the type of cut needed. Some of these cutting steps are, planning, and cleaving or sawing, bruting, and polishing.
The refining process is the chemical process by which impurities are removed from precious metal. The chemical process involves dissolving the target metal and then precipitating it back out.
fractional distillation
Crude oil distillation is followed by the process of petroleum refining. There are many branches leading off into producing diesel, petrol, and the many products that result from the refining process.
silver can be as smooth or as rough as the refining process makes it
Cracking is the most important process for the commercial production of gasoline and diesel
No.
The refining process is the chemical process by which impurities are removed from precious metal. The chemical process involves dissolving the target metal and then precipitating it back out.
This is a chemical engineering process - the refining of petroleum.
Refining
refining
zone process
You can find more information about the process of refining gold online at the Precious Metal Refining Info website. You can also watch a video about the process at the YouTube video streaming website.
when mining and refining nickel in WA , is this process the same as ultramafic nickel
yes
fractional distillation
by the process of mineral refining
it is called ELECTROLYSIS.