Appraising is the most effective way to determine the value of an old European cut diamond. The value of the diamond can be calculated to an approximate value by appraising it with a professional gemologist. It will help in ensuring or selling the ring to a jeweler or third party. Another way to accurately find out the value of an old European cut diamond is by grading it with a reputable gemological standards institution like the GIA.
The grading can assess various key aspects of the diamond such as its cut, carat, clarity, and color. Choosing an old European cut diamond ring from a jeweler that comes with a GIA certification can help the buyer know more about the aspects of the ring. Besides, properly grading an old European cut diamond would help in getting the best value for the ring.