In jewelry, the most common form of diamond cutting is the round cut, known as brilliant. This term refers to a round cut with at least 57 facets and an added lower table. The widespread use of this cut has led to a misunderstanding: the public tends to equate the terms brilliant and diamond as if they were the same thing.
In practice, the term brilliant, when used alone, identifies only the round-cut diamond. However, there are many other precious stones that can be cut as brilliant, such as rubies, sapphires, and topazes.