The two most important things to consider when dealing with Carre Shaped diamonds are:
They are very unforgiving with it comes to imperfections. When dealing with Carre Shapes, you should opt for the highest possible clarity and color you can afford, because it has an open and clear step cut visibility, which is also part of its charm.
Due to its 90-degree corners, it is highly recommended to use a setting that will prevent it from chipping, as well as a reliable, which will most likely recommend Bezel settings as the safest choice.