Emeralds are green! The only variance is in the hue which is dependent on where in the world the emerald is from. It’s also common for emeralds to have inclusions. The cleaner the stone, the more expensive it will be!
I personally prefer to set emeralds in yellow gold. Not only does the yellow gold make emeralds look richer in colour, it’s a softer metal which makes the stone easier to set!
They are part of the beryl family along with aquamarines.
What shade of emerald do you like…light, medium, or dark?