one more question from a gemmology student?

[Spear]

Hi guys,

There is one more thing that I would like you guys to clarify for me.

The basic outline of a diamond is formed by the bruting process.

As I understand the above: The bruting process is when two stones are rubbed against each other in a circular motion.
They would grind one another down until both have a round outline, or girdle.

Well, How are fancy shapes bruted? ex. hearts and pears.
How do cutters form the outline or girdle of fancy shapes?

As I learn more about diamonds and gemmology, I would try to post more difficult questions but for now I am afraid to waste your time with these mediocre questions.

Thanks again for answering my previous questions, I really appreciate your help

Kind Regards
Kyran Barry

 

[oldminer]

The round stone spins and the fancy shape is held up against it and is rubbed away into the desired shape. This is very simplistic. The fancy is in a static position and manipulated to create the desirted outline while the other stone revolves.

Hope that helps.

 

[Spear]

Yeah!

It was actually very obvious.

Thank you!