Cut Clarity Color Carat Cleaning

Diameter: The width of the diamond as measured through the girdle.

Table: The largest facet of a gemstone. Crown: The top portion of a diamond extending from the girdle to the table.

Girdle: The intersection of the crown and pavilion which defines the perimeter of the diamond.

Pavilion: The bottom portion of a diamond, extending from the girdle to the culet.

Culet: The facet at the tip of a gemstone. The preferred culet is not visible with the unaided eye (graded "none" or "small").

Depth: The height of a gemstone measured from the culet to the table.

http://www.bluenile.com/diamonds/diamond-cut

Diamond Shapes

Round Brilliant Marquise Princess Radiant Emerald Asscher Heart Oval Pear

http://www.bluenile.com/diamonds/diamond-cut

http://jewelry.about.com/od/diamondshape1/Choose_a_Diamond_Shape.htm

http://www.diamond.com/education/about_diamonds_shape.jsp

http://www.diamondsfaq.com/