a written description and evaluation by a respected gemological laboratory of your diamond, including its size, shape, cut, quality, finish and individual characteristics
A certificate issued to a diamond by the Gemological Institute of America (GIA) or others, upon successfully passing the diamond-grading. The Certificate gives a complete and detailed description of the diamond, listing the 4C's.
A certificate awarded to those who complete successfully the "Diamond Course" of the Gemological Institute of America, which requires passing the diamond-grading and diamond-appraising instruction and practice.
a complete report of the quality of an individual diamond, including information on shape, weight, clarity, fluorescence, colour grade, measurements, proportions and finish grade