The diamond processing was very troublesome and the screening process was complex.
Li Du went into the workshop to have a look. The workers had sharp eyes. The raw diamonds that were selected for cutting and grinding into jewelry could not have a crack or any kind of impurity.
The workers were the backbone of a diamond mine, and each was treated well and respected by the mine's owners, who had a good relationship with them.
In addition to the workers who selected the perfect rough stone, there were also some people of slightly lower status who were responsible for the selection of small diamonds and could use the mechanical screening for assistance.
A large number of raw stones were continuously sent to the operating table of the screening workers for manual selection. The defective stones would be sent to a different operating table for evaluation by another group of people.
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