. They are inexpensive diamond substitutes. Now you can have real diamonds at a low-cost price. Imagine yourself wearing diamonds certified by the Gemmological Institute of America (GIA), the prime diamond research and grading body. The same chemical, physical and optical qualities can be found in these synthetic diamonds. Only through a trained eye, by a gemmologist, can these synthetic diamonds be distinguished from natural diamonds. Why waste your money for buying one naturally grown diamond when you can actually purchase a set of jewelry with the same amount?