The emerald cut was at the beginning (as its name indicates) developed for cutting emeralds. This cut is characterized for its sophistication.
The emerald cut makes more evident the flaws and inclusions of the diamond, so it’s important to get a great one. But the positive thing is that as the emerald cut isn’t as popular as the princess one or as traditional as the round brilliant, its price is much cheaper!
For the classic emerald-cut shape, look for a length-to-width ratio between 1.30 and 1.40.