'Cut' and 'shape' of the differences between the word 'cut' has two different meanings. Most of the time it is used to describe the shape of a diamond, such as a princess square cutting single diamond ring. Although the term is often used to describe the shape, but it is not correct. The real meaning of 'cutting' does not mean the shape of a diamond, but refers to the size of the diamond, the symmetry of polishing and diamond. A diamond appraiser when evaluating a diamond grinding quality, he focuses on three aspects: the brightness ( The white light in the diamond surface reflection) Color, fire ( Color flashing, comes from the white light dispersion in diamond) And flash ( Diamond (move when the light and shade Glare) ) 。 Rating standard, like clarity, and color, cut by grading evaluation: excellent: maximum reflects light ideal: almost all the light reflection: good reflection and the light of 'ideal' similar level: good reflection light fair: a moderate amount of light reflected bad: reflecting a small amount of light the pursue is perfect, only with excellent quality diamonds. If you're looking for a beautiful diamond ring, it is your good choice.