Home 
Diamond Cutting Faceting History
Planning
The first objective is that of maximum return on investment for the piece of diamond rough. The second is how quickly the finished diamond can be sold. Scanning devices are used to get 3-dimensional computer model of the rough stone. Also, inclusions are photographed and placed on the 3D model, which is then used to find an optimal way to cut the stone.
Cleaving
Cleaving is the separation of a piece of diamond rough into separate pieces, to be finished as separate gems.When the stone is very large and valuable, the cleaving is a most dangerous process, since a mistake by the planner or the cleaver can shatter the stone.
Sawing
Sawing is the use of a diamond saw or laser to cut the diamond rough into separate pieces.The saw is a paper-thin disk of phosphor bronze, rotate on a horizontal spindle at concerning 4,000 revolutions per minute.
Bruting
Bruting is the process whereby two diamonds are set onto spinning axles turning in opposite directions, which are then set to grind against each other to shape each diamond into a round shape. This can also be known as girdling.
Polishing
Polishing is the name given to process whereby the facets are cut onto the diamond and final polishing is performed. The process takes the steps blocking, faceting, also called "brillianteering", and polishing. Placing and polishing are done by location the stone either in a lead dop or a mechanical clamp and holding it down on a revolving cast-iron lap (horizontal, circular disk) that has be charged with diamond dust.
Final inspection
The final stage involves thoroughly cleaning the diamond in acids, and examining the diamond to see whether it meets the quality standards of the manufacturer.
