Cut grading is very similar to clarity grading for gemstones in that it plays much less of a role in a value of a gemstone than it does for diamonds. Few main points to note about cut are: Firstly, there are many more number of shapes and cutting styles available than diamonds. It would be very difficult to list them all. Secondly, gemstones such as ruby and sapphire are cut to retain the most color (as that is the number one variable in determining gemstone price) and are not cut to precision like diamonds. It would be unrealistic to expect a gemstone such as ruby or sapphire to be as well shaped and be cut to precise proportions as a diamond. However, one thing to note here is that unheated stones generally will have much poorer quality of cutting than heated stones because cutters are more inclined to yield as much carat weight as possible from the unheated rough than from the heated rough where some attention is still paid on the cutting of the stones.