The Diameter – Is the width of a diamond, measured through its widest part (girdle).
The Depth – Is the height of a diamond, measured from the table to the culet.
The Table – Is the flat part on the top of the diamond, which is also the largest facet on the stone.
The Girdle – Is the outer edge of the diamond, and is the widest part of the diamond. The girdle is rated by its thickness. Experts suggest seeking stones with girdles that are not too thick or too thin.
The Crown – Is the portion of the diamond that extends from the table (top) to the girdle (middle).
The Culet – Is the bottom point of the diamond. In many cases it contains a very small facet. The smaller the culet the better.
The Pavilion – Is the portion of the diamond that extends from the girdle (middle) to the culet (bottom).