Facets are formed by cutting and polishing, both manual tasks.
Different cuts of diamonds are formed with a different number of facets. For example, a round cut diamond generally contains 58 facets. Depending on the raw stone, a different number of facets are cut, to show off the natural clarity or colour of the stone.
Diamonds facets are cut with other diamonds or with lasers, depending on the facet.
Diamonds are 'colourful' because they reflect a rainbow of light through their facets.
Some raw diamonds are shaped like a pyramid, and some like two pyramids joined at the base. However, not all raw diamonds have these facets. In truth, the sides of raw diamonds are not properly known as 'facets', because the plane of the side is rarely absolutely flat, until it is cut and polished by a diamond cutter.
Emerald cut diamonds generally have between 50 and 58 facets. You can find more about diamonds from the Gemological Institute of America. That's how I learned all of my diamond info. gia4s.gia.edu.
Diamonds glitter because the facets and polish made on the stones cause them to refract and reflect light.
Diamonds are formed from carbon.
Diamonds formed from carbon in the lab, are diamonds formed from the mineral carbon.
Diamonds have highly reflective surfaces with many facets. This causes them to shine and reflect light very easily which causes them to shine.
Take a course which teaches you Facets Diamonds. There are some available online.
No. Diamonds are formed from carbon.
Industrial diamonds are formed at the same time and in the same places as gem-quality diamonds. Industrial diamonds represent about 80% of all diamonds mined.